Question

4 X+6 (x+7)+8(x+6)+x(x+5)=0
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Answer 1

Explicação:

4X+6×(X+7)+8×(X+6)+X(X+5)=0

4X+6X+42+8X+48+X^2+5X=0

X^2+23X+90=0

Delta=23^2-4×1×90

Delta=529-360

Delta=169

X=-23+-Raiz quadrada de 169/2×1

X=-23+-13/2

X1=-23-13/2=-36/2=-18

X2=-23+13/2=-11/2=-5,5