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disa [49]
3 years ago
7

I need help with the first question please.

Mathematics
1 answer:
Viktor [21]3 years ago
4 0

Answer:

x^2 - 13x + 36

Step-by-step explanation:

Use the so-called FOIL method:  multiply First terms, Outer terms, Inner terms, Last terms.

First terms:  (x)(x) = x^2

Outer terms:  (x)(-9) = -9x

Inner terms:  (-4)(x) = -4x

Last terms:  (-9)(-4) = 36

Combining the x terms, we get

x^2 - 13x + 36

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