Question

1) (x-a) (x+b) = ?
2) (x-a) (x-b) = ?

Plz tell the correct formula with neat explanation of both...
And write the Formula with bold means it would be easily recognizable...

plz ans me correctly and no copy paste plz....

I will mark your answer as brainliest if no spam..... but within 3 or 4 days...
and i will also thank ur 10 ans...❤







​

Answer 1

Answer:

Take “(x-a)(x-b)” for example.

First, consider either of them as one common factor to the other and detach them. Then the old expression can be transformed as this: (x-a)(x-b) = x(x-b)-a(x-b). This transformation removes one bracket. (Also (x-a)(x-b) = x(x-a)-b(x-a))

Second, combine the remaining part with the other bracket. Then we get: x(x-b)-a(x-b) = x^2-xb-ax+ab. (Also x(x-a)-b(x-a) = x^2-xa-bx+ba)

Last, put the similar factors together. This results in: x^2-(a+b)x+ab. (Also the answer is the same) (PS: The final expansion contains a bracket, which seems to be a paradox to the conclusion that we bring up at first. However, the bracket in the final expansion actually aims to simplify the expansion, which is another function of a bracket. This is math, though.)

Problem solved.

Answer 2

hope it will help you.

please mark it as brainliest.