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you do (245x)
-5
2y2(3y - 1)
4x2 + 12x + 5 = 4x2 + 2x + 10x + 5 = 2x(2x+1) + 5(2x+1) = (2x+1)(2x+5)
2a2b2+3a2b2-5abc
you do (245x)
-5
5(3-2x)
-5
-5
(x-7)(x-3)
It is 2(2x+3) when factorised
x^2 - 10 x + 25 = (x - 5)(x - 5)
8x2 - 10x - 3 = (2x - 3)(4x + 1)
100x
low-power magnificatin = (10x)(4x) = 40x high-power magnification = (10x)(40x) = 400x It depends on what magnification you are looking for; high-power magnification OR low-power magnification.
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