Question

Using quadratic formula solve the quadratic equation 18x2 + 9x – 20 = 0.​

Answer 1

Given:

$10x²+9x-20=0$

Using quadratic formula

$-b±\sqrt{b²-4ac}$

$10x²+9x-20=0$

This equation is in the standard form :ax^{2}+bx-c=0.substitute 10 for a,9 for b and 20 for c in the quadratic formula.

square 9

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Answer 2

Step-by-step explanation:

1. This is answer a=18;b=9;c=-20