factorise x^2+x/4-1/8
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1/2 and -1/4..............
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x²+x/4-1/8
=8x²+2x-1 (multiplying 8 throughout the eqn.)
=8x²+4x-2x-1
= 4x(2x+1)-1(2x+1)
=(4x-1)(2x+1)
= x=(1/4) or (-1/2)
=8x²+2x-1 (multiplying 8 throughout the eqn.)
=8x²+4x-2x-1
= 4x(2x+1)-1(2x+1)
=(4x-1)(2x+1)
= x=(1/4) or (-1/2)
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