nainglatt91
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Knowing that the result of expanding (x+a)(x-6) is x²+mx-48, find the values ​​of a and m.​

Sagot :

AlgebraicAardvark

We know -48 came from (a)(-6), the "L" in "FOIL".

If -48 = -6a, then a = 8.

Now with a=8, go ahead and FOIL (x+8)(x-6) to find m.

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