Question

Desenvolva os produtos e reduza os termos semelhantes :

Answer 1

Explicação passo-a-passo:

a)(x +y)²-2xy

x²+2xy+y² - 2xy

x²+2xy-2xy+y²

x²+y²

b)(5-2z)² - (25+10z)

25 - 20z+ 4z² - 25- 10

25-25-20z+4z²

+20z+4z²

c)(3x + 1 )² + (3x - 1 )² - 2

9x²+6x+1+ 9x² - 6x + 1 - 2

9x²+9x²+6x-6x+1+1-2

18x²+1+1-2

18x²+2-2

18x²

d)(2 -2x)² + (3-2x)²- 2(x -3)

4 - 8x+ 4x² + 9-12x +4x² - 2x + 6

4+9+6-8x-12x-2x+4x²+4x²

19-22x+8x²

e)(x+3)(x+3)- x (x- 3y)

x²+3x+3x+9-x²+3xy

x²-x²+3x + 3x+9+3xy

9x+9+3xy

f)(5a+ 3 )²+(5a-3)²-2(a+5)

25a²+30a+9 +25a²-30a + 9-2a-10

25a²+25a²+30a-30a-2a+9+9-10

50a²-2a+8

g)(2x-3)²+(x-5)(x + 5)-(x +4)²

4x²-12x +9 +x²+5x -5x + 25- x²+8x+16

4x²+x²-x²-12x+5x-5x+8x+25+9+16

4x²-4x+50