Question

(5x+1)elevado a 2 =
(-5x-2)elevado a 2 =
(-7x-9y) elevado a 2 =

Answer 1

a) (5x+1)²
     25x² + 10x + 1

b) (-5x²-2)²
     25x⁴ + 20x₂ + 4

c) (-7x-9y)²
    49x² + 126xy + 81y²