Question

(2x+3)²=10-(x+4)(x-2)

Answer 1

(2x+3)²=10-(x+4)(x-2)=
4x²+9=10-x²-2x+4x-8=
4x²+x²+2x-4x+9-10+8=0
5x²-2x+7=0

Answer 2

Resposta:

(2x+3)²=10-(x+4)(x-2)

(2x+3)(2x+3)=10-(x²-2x+4x-8)

4x²+12x+9=10-(x²+2x-8)

4x²+12x+9=10-x²-2x+8

4x²+12x+9-10+x²+2x-8=0

5x²+14x-9=0

A=5  B=14  C=(-9)

ESPERO TER AJUDADO ∑:⊃