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Solve 3x2 plus 7x equals 20?

Updated: 10/24/2022

Lpetril ∙

Lvl 1

∙ 15y ago

Best Answer

3x^2 + 7 x =20

3x^2 + 7x - 20 = 0

3(-4)^2 + 7(-4) -20

3(16) -28 -20

48-28-20 = 0

(-4)

3x^2 + 7x =20

3(1.666)^2 + 7(1.666) -20 =0

3(2.78) + 11.66 - 20 =0

8.34 + 11.66 - 20 = 0

(1.666 or 5/3) answers (-4, 5/3)

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