Question

Simplifique as expressões;

A)5x-(2x+3)²=

B)(x+5)²-x( x+3)

Prfvr se poderem me ajudar!

Answer 1

a) 5x-(2x+3)²
5x-4x²+6x+6x+9
5x-4x²+12x+9
-4x²+5x+12x+9
-4x²+17x+9

b)(x+5)²-x(x+3)
x²+5x+5x-x²-3x
x²+10x-x²-3x
x²-x²+10x-3x
10x-3x
7x