Submitted by vc124 on Sat, 11/26/2016 - 16:40
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How do you find the two possible relationships between a and b mentioned in the hints?
Submitted by vc124 on Sat, 11/26/2016 - 16:40
How do you find the two possible relationships between a and b mentioned in the hints?
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Factorise!
If (for example) $(2a-b)(a+2b)=0$ then either $2a=b$ or $a=-2b$.