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Ria
Ria

Secondary 1 chevron_right chevron_right Singapore

Hi for this equation,I don’t understand the second line at all why there’s a bracket and why the ‘x’ is outside of the bracket and where did the 8’x’ go someone pls explain to me Thoroughly for this equation thank you very much!

Date Posted: 6 years ago
Views: 312

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Hazeeq Abdullah
Hazeeq Abdullah's answer
7 answers (Tutor Details)
1st
brackets generally express multiplication. a(b) would mean a times b. in this case, x is found to be a common factor in x^2 and 8x. by factorisation (removal of a common factor in this case), you get 2 factors for the original equation.

*look at example in picture*
here, c is a common factor in ac and bc, so we can remove the c to get (2)
if we were to multiply c and (a+b) again, we would get the original equation (1)

since at least one of the factors have to be zero for the product to be 0, c=0 or (a+b)=0
Ria
Ria
6 years ago
Thank you!! Really helped