SOS, CÁLCULOS COM LETRAS!! ME AJUDEM TENHO Q ENTREGAR AMANHÃ DE MANHÃ..
Anexos:
Soluções para a tarefa
Respondido por
1
a)(x+1)²
a²+2ab+b²
x²+2x+1
b)(2a+3)²
4a²+12a+9
c)(3x+2)²
9x²+12x+4
d)(2+a)²
4+4a+a²
e)(x-2)²
a²-2ab+b²
x²+4ab+4
f) (3x-y)²
9x²-6xy+y²
g)(x/4+1)²
x²/16+2/4x+1
x²+8x+16
h)(x/4-1)²
x²/16-2/4x+1
x²-8x+16
i)(2a-5b)²
4a²-20ab+25b²
j)(3ab-b²/3)²
(3ab-b²/3)(3ab-b²/3)
9a²b²-ab³-ab³+b⁴/9
81a²b²-18ab³+b⁴
a²+2ab+b²
x²+2x+1
b)(2a+3)²
4a²+12a+9
c)(3x+2)²
9x²+12x+4
d)(2+a)²
4+4a+a²
e)(x-2)²
a²-2ab+b²
x²+4ab+4
f) (3x-y)²
9x²-6xy+y²
g)(x/4+1)²
x²/16+2/4x+1
x²+8x+16
h)(x/4-1)²
x²/16-2/4x+1
x²-8x+16
i)(2a-5b)²
4a²-20ab+25b²
j)(3ab-b²/3)²
(3ab-b²/3)(3ab-b²/3)
9a²b²-ab³-ab³+b⁴/9
81a²b²-18ab³+b⁴
Respondido por
1
( x + 1 )² = (1°)² + 2.1°.2° + (2°)²
1° 2° = x² + 2.x.1. +1²
= x² + 2x + 1
----------------------------------------------------
( 2a + 3 )² = (2a)² + 2.2a.3 + 3²
= 4a² + 12a + 9
--------------------------------------------------------------------------------
(3x + 2)² = (3x)² + 2.3x.2 + 2²
= 9x² + 12x + 4
---------------------------------------------------------
(2 + a)² = 2² + 2.2.a + a²
= 4 + 4a + a²
---------------------------------------------
( x - 2)² = x² - 2.x.2 + 2²
= x² - 4x + 4
------------------------------------------
(3x - y)² = (3x)² - 4.3x.y + y²
= 9x² - 12xy + y²
-------------------------------------------------------------------------------
( x/4 + 1)² = (x/4)² + 2.x/4.1 + 1²
= x²/16 + 2x/4 + 1 simplifique
= x²/16 + x/2 + 1
-----------------------------------------------------------------
(x/4 - 1)² = (x/4)² - 2.x/4.1 + 1²
= x²/16 - x/2 + 1
------------------------------------------------------------------
(2a - 5b)² = (2a)² - 2.2a.5b + (5b)²
= 4a² - 20ab + 25b²
----------------------------------------------------
( 3ab - b²/3)² = (3ab)² - 2.3ab.b²/3 + (b²/3)²
4
= 9a²b² - 6ab³/3 + b /9
4
= 9a²b² - 2ab³ + b /9
-------------------------------------------------------
(√3 + √a)² = (√3)² + 2.√3 .√a + (√a)²
= 3 + 2√3a + a
--------------------------------------------------------------------------
5 6 5 5 6 6
(2a + 2b /3 )² = ( 2a )² + 2.2a .2b /3 + (2b /3 )²
10 5 6 12
= 4a + 8a b /3 + 4 b /9
-------------------------------------------------------------------------------------
1° 2° = x² + 2.x.1. +1²
= x² + 2x + 1
----------------------------------------------------
( 2a + 3 )² = (2a)² + 2.2a.3 + 3²
= 4a² + 12a + 9
--------------------------------------------------------------------------------
(3x + 2)² = (3x)² + 2.3x.2 + 2²
= 9x² + 12x + 4
---------------------------------------------------------
(2 + a)² = 2² + 2.2.a + a²
= 4 + 4a + a²
---------------------------------------------
( x - 2)² = x² - 2.x.2 + 2²
= x² - 4x + 4
------------------------------------------
(3x - y)² = (3x)² - 4.3x.y + y²
= 9x² - 12xy + y²
-------------------------------------------------------------------------------
( x/4 + 1)² = (x/4)² + 2.x/4.1 + 1²
= x²/16 + 2x/4 + 1 simplifique
= x²/16 + x/2 + 1
-----------------------------------------------------------------
(x/4 - 1)² = (x/4)² - 2.x/4.1 + 1²
= x²/16 - x/2 + 1
------------------------------------------------------------------
(2a - 5b)² = (2a)² - 2.2a.5b + (5b)²
= 4a² - 20ab + 25b²
----------------------------------------------------
( 3ab - b²/3)² = (3ab)² - 2.3ab.b²/3 + (b²/3)²
4
= 9a²b² - 6ab³/3 + b /9
4
= 9a²b² - 2ab³ + b /9
-------------------------------------------------------
(√3 + √a)² = (√3)² + 2.√3 .√a + (√a)²
= 3 + 2√3a + a
--------------------------------------------------------------------------
5 6 5 5 6 6
(2a + 2b /3 )² = ( 2a )² + 2.2a .2b /3 + (2b /3 )²
10 5 6 12
= 4a + 8a b /3 + 4 b /9
-------------------------------------------------------------------------------------
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