book
Maths Puzzle
Numerical Ability
check my work please:
4x^2+8x=0
4x(x+2)=0
4x=0 or (x+2)=0
4x=0 or x=-2
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book Other Question
solve each quadratic equation written in vertex form.
2(x+3)^2-4=0
3/4 n=16
2/5 n=30
-7/15 =21/10
n.5/16=15/14