1 Answer

Tundey · Answer 1 · 2020-02-11T10:05:51+0000

Answer:

The solution of the given quadratic equation is 1 and (-10).

Explanation:

2x^2+18x=20

x^2+9x=(20)/(2)

x^2+9x-10=0

ax^2+bx+c=0

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

D=b^2-4ac=(9)^2-4(1)(-10)=121

$x=\frac{-b+{√(D)}}{2a}=((-9)+√(121))/(2(1))=1$

$x=\frac{-b-{√(D)}}{2a}=((-9)-√(121))/(2(1))=(-10)$

The solution of the given quadratic equation is 1 and (-10).

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