Question

(a+b)²
(x+3)²
(f-9)²
(-w+7)²
(-4x+5)²​

Answer 1

Explicación paso a paso:

(a+b)² = (a)^2 + 2.a.b + (b)^2

(x+3)² = (x)^2 + 2.x.3+ (3)^2 = x^2 + 6x + 9

(f-9)² = (f)^2 - 2.f.9 + (9)^2 = f^2 - 18f + 81

(-w+7)² = (-w)^2 + 2.(-w).7 + (7)^2 = w^2 - 14w + 49

(-4x+5)² = (-4x)^2 + 2. (-4x).(5) + (5)^2 = 16x^2 - 40x + 25