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what is 2ab if a=7 and b=2?

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Sarah Sordat

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3y ago
Updated: 10/15/2021

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Sarah Sordat

Lvl 2
3y ago

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What is the GCF of 8a2b and 14a b2?

The GCF is 2ab.


Are there numbers with the property that the sum of their squares equals the square of their sum?

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There are 3 main rules for expansion of algebraic expressions. They are as follows: 1) a2 _ b2 = (a-b) (a+b) 2) (a+b)2 = a2 + 2ab +b2 3) (a-b)2 = a2 - 2ab +b2


What is the simplified expression for 2a2b a2 5ab 3ab2 b2 2a2b 2ab?

I'm going to assume a few things... 1.) the 2s after a letter are 2 2.) this is addition, because it's easier for me and if you wanted another operation, you should have stated so. 2a2b+a2+5ab+3ab2+b2+2a2b+2ab 4ab+a2+5ab+3b2a+b2+4ab+2ab 15ab+3b2a+a2+b2


How do you cube a binomial?

let binomial be (a + b)now (a+b)3 will be (a+b)(a+b)2 = (a+b)(a2 + 2ab+ b2) = a(a2+ 2ab+ b2) + b(a2 + 2ab+ b2) = a3+ 2a2b+ ab2 + a2b + 2ab2 + b3 = a3+ 2a2b+ ab2 + a2b + 2ab2 + b3 = a3 +3a2b + 3ab2 +b3 hope it helped... :D


If the perfect square terms are A2 and B2 then the other term must be?

2AB


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Some special cases that are relevant in practice are: (a + b)2 = a2 + 2ab + b2 (a - b)2 = a2 - 2ab + b2 (x + a)(x + b) = x2 + (a+b)x + ab


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(a-b)2 = a2 _ 2ab+b2


What is formula for a plus b whole square?

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Is a squared plus b squared the same as a plus b squared?

No. If you expand (a + b)2 you get a2 + 2ab + b2. This is not equal to a2 + b2