Question

2)CALCULE: A)(5-X)²= B)(Y-3)²= C)(A-B)²= D)(6Y-4)²= E)(3x-2y)²= F)(2a-b)²= ​

Answer 1

Explicação passo-a-passo:

$a)(5 - x) {}^{2} = (5) {}^{2} - 2.5x + x {}^{2} = 25 - 10x + x {}^{2}$

$b)(y - 3) {}^{2} = y {}^{2} - 2.y.3 + 3 {}^{2} = y {}^{2} - 6y + 9$

$c)(a - b) {}^{2} = a {}^{2} - 2ab + b {}^{2}$

$d)(6y - 4) {}^{2} = (6y){2} - 2.6.4.y + 4 {}^{2} =36 y { }^{2} -4 8y + 16$

$e)(3x - 2y) {}^{2} = (3x) {}^{2} - 2.3.2xy + (2y) {}^{2} = 9x {}^{2} - 12xy + 4y {}^{2}$

$f)(2a - b) = (2a) {}^{2} - 2.2ab + b {}^{2} = 4a { }^{2} - 4ab + b {}^{2}$

Answer 2

Explicação passo-a-passo:

(5-X)²

5²-2*5x+x²

25-10x+x²

=>x²-10x+25

(Y-3)²

y²-2y*3+3²

=>y²-6y+9

(A-B)²

=>a²-2ab+b²

(6Y-4)²

(6y)²-2*6y*4+4²

=>36y²-48y+16

(3x-2y)²

(3x)²-2*3x*2y+(2y)²

=>9x²-12xy+4y²

(2a-b)²

(2a)²-2*2ab*(b)²

=>4a²-4ab+b²