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lana66690 [7]
3 years ago
7

Expand and simplify (x-3)(x+7)

Mathematics
2 answers:
dedylja [7]3 years ago
7 0
X(x+7) -3(x+7)
x² + 7x -3x -21
x² +4x -21

that's the answer
if you understand and it's correct. don't forget to make my answer the brainliest
andreev551 [17]3 years ago
3 0
Let's multiply each term for the other one.

I mean: x*x; x+7; -3*x; -3*7

So x²+7x-3x-21

We add up like terms.

Final answer: x²+4x-21
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