2 years ago

Expand & simplify (2x+6)(x−9)

Mathematics

1 answer:

Alex777 [14]2 years ago

8 0

Answer:

2x^2-12x-54

Step-by-step explanation:

First 2x times x along with 2x times -9

Second 6 times x along with 6 times -9

2x^2-18x+6x-54

=2x^2-12x-54

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Please help me quickly and explain your answer

MariettaO [177]

Answer:

A $x=4$

Step-by-step explanation:

Perimeter = the sum of all side lengths

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Perimeter = 15 (in this case)

so...

$(x-3)+2x+6=15$

And we're trying to solve for x.

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Step 2. Add 3 to both sides

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3 years ago

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