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Q: Show a plus b divided 2 equals 2ab divided by a plus b?

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2ab

-2ab

42 72

If, as is normal, ab represents a times b, etc then ab + ab + cc = 2ab + c2 which is generally not the same as abc.

(a2+2b2-2ab)(a2+2b2+2ab)

2ab - 3b2 - 3b + 2a does not have a solution, as it is not an equation.

a square plus 2ab plus b square

5ab-2ab+4a-b+5b = 3ab+4a+4b

-5ab + 7ab -9ab + ab -2ab ... Let's simplify that a bit:ab(-5+7-9+1-2) = -8ab

x=2ab+7 x= 2(3)(5) +7 x=30+7 x=37

the answer to factorising (a x a3 + 2ab + b2) would be (a4+2ab+b2)

Remember to factor out the GCF of the coefficients if there is one. A perfect square binomial will always follow the pattern a squared plus or minus 2ab plus b squared. If it's plus 2ab, that factors to (a + b)(a + b) If it's minus 2ab, that factors to (a - b)(a - b)

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