Question

using identity solve for (x-5)(x-12)​

Answer 1

hey mate!!

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we know that (x-a)(x-b)=x²-x(a+b)+ab

then the answer will be

x²-x(5+12)+5(12)

=x²-17x+60

hope the answer helps u

Answer 2

$(x - 5)(x - 12) \\ = {(x)}^{2} + ( - 5 - 12)x + ( - 5) \times ( - 12) \\ = {x }^{2} + ( - 17x) + 60 \\ = {x}^{2} - 17x + 60$
Using the identity - (x+a)(x+b)= (x)^2+(a+b)x+ab





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