Mathematics
By using standard formulae, expand the following:
(x+3)(x-5)
Expansions
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Answer
We know that (x+a)(x-b) = x2 + (a - b)x - ab
∴ (x+3)(x-5) = x2 + (3 - 5)x - (3)(5) = x2 - 2x - 15
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By using standard formulae, expand the following:
(x+3)(x-5)
22 Likes
We know that (x+a)(x-b) = x2 + (a - b)x - ab
∴ (x+3)(x-5) = x2 + (3 - 5)x - (3)(5) = x2 - 2x - 15
Answered By
16 Likes