bhaskardaud11
bhaskardaud11
19-03-2021
Mathematics
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2. Factorise: a - b - a + b2.square
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RebelTheBest
RebelTheBest
19-03-2021
a - a removes both a’s from equation, then you’re left with b + bsquared, since they are unknown values you cannot combine them, even if it is the same letter, you can only add and subtract unknown values with their same letters together.
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