Question

05.
5. The polynomial equation x(x+1)+8=
(x+2)(x-2) is
a. Linear equation
b.Quadratic equation
c.Cubic equation
d.bi- quadratic equation
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Answer 1

On simplification

$x(x+1)+8=(x+2)(x-2)$

$\implies \: {x}^{2} + x + 8 = {x}^{2} - 4$

$\implies \: x + 12 = 0$

So The polynomial equation

x(x+1)+8=(x+2)(x-2) is

a. Linear equation