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2 years ago

Cet. Factor and Solve. x^2 + 3x - 18 = 0 - Ready? Enter your answer

Mathematics

1 answer:

fiasKO [112]2 years ago

4 0

Answer:

x = 3 or x = - 6

Step-by-step explanation:

Factor and Solve. x^2 + 3x - 18 = 0

We can use the Diamond method of factoring.

Factor -18 = 6 * -3; and 3 = 6 + -3

x^2 + 3x - 18 = x^2 -3x + 6x - 18 = 0

= (x^2 -3x) + ( 6x - 18) = 0

= x(x - 3) + 6*(x - 3) =0

= (x - 3)*(x + 6) = 0

so Either x - 3 = 0 or x + 6 = 0

x = 3 or x = - 6

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