3 years ago

Bob says that when he multiplies (x+3) (x-3) he gets x^2-6x-9 is he correct explain

1 answer:

5 0

(x+3)(x-3)
x*x=x^2
x*-3=-3x
3*x=3x
3*-3=-9

where’s where he most likely messed up
x^2-3x+3x-9

the correct answer is x^-9

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Hi!

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Lenny is 3 times as old as Max.
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When you subtract Max's age from Lenny's age, you get 24.
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Now solve

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The equation is 3m - m = 24
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