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brainliestanswerer

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Answer:

[tex]x^2+4x-45[/tex]

Step-by-step explanation:

Multiplying x * x gives us [tex]x^2[/tex]

then multiplying x * -5 gives us -5x

then multiplying 9 * x gives us 9x

then multiplying 9 * -5 = -45

Now write this as one big equation:

[tex]x^2-5x+9x-45[/tex]

Combine like terms and you get [tex]x^2+4x-45[/tex]