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arlik [135]
3 years ago
5

Fill in the blanks to make the equation true. (x−9)(x+2)=x^2________ −18

Mathematics
2 answers:
Andrews [41]3 years ago
8 0

Answer:

x² - 7x - 18

Step-by-step explanation:

Remember to follow FOIL.

First, multiply the first. (x)(x) = x²

Next, multiply the second. (x)(2) = 2x

Then, multiply the third. (-9)(x) = -9x

Finally, multiply the last. (-9)(2) = -18

Combine like terms: x² + 2x - 9x - 18

x² - 7x - 18

x² - 7x - 18 is your answer.

~

never [62]3 years ago
8 0

Answer:

\large\boxed{-7x}

Step-by-step explanation:

Use FOIL:

<em>(a + b)(c + d) = ac + ad + bc + bd</em>

<em></em>

(x-9)(x+2)=(x)(x)+(x)(2)+(-9)(x)+(-9)(2)=x^2+2x-9x-18

<em>combine like terms</em>

=x^2+(2x-9x)-18=x^2-7x-18

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