Question

what is (a+b) / (a-b)​

Answer 1

(a+b)/ (a-b)

(a- b) 2

Step-by-step explanation:

2 is square ok

Answer 2

Answer:

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Step-by-step explanation:

What is (a+b) (a-b)?

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To solve this problem, you will want to FOIL.

That is, multiply the Firsts (the left-most terms in each parentheses (the 1st term in the 1st parentheses by the 1st term in the 2nd parentheses)),

Then, multiply the Outers (the terms on the far left and right (the 1st term in the 1st parentheses by the 2nd term of the 2nd parentheses)),

Then, multiply the Inners (the two terms closest to the center (that is, the 2nd term of the 1st parentheses by the 1st term of the 2nd parentheses)),

Finally, multiply the Lasts (the right-most terms in each parentheses (the 2nd term of the 1st parentheses by the 2n

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Thanks for A2A

Well, it's a basic maths formula that (a+b) (a-b) = a^2 - b^2

Now solving it step by step we get-

Left Hand Side ,

(a+b) (a-b)

= a(a-b) + b(a-b)

= (a*a) - (a*b) + (b*a) - (b*b)

=a^2 - ab + ba - b^2

= a^2 - b^2

= Right Hand Side

Hence proved.

Now, let's take an example.

Let a = 5 and b =4

(a+b) (a-b)

= 5^2 - 4^2

= 25 - 16

= 9

By applying formula we get answer directly

(a+b) (a-b)

=a^2 - ab +ab - b^2

= 5^2 - 5*4 +5*4 - 4^2

=25-20+20-16

=25 - 16

= 9