10 class maths quadratic equations the method of completing the square 5x-7x-6=0
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5x-7x-6=0
5x/5-7x/5-6/5=0
5x-7x/5-6/5=0
5x-7x/5=6/5
5x-7x/5+(7/10)square=6/5+(7/10)square
(5x-7/10)square=6/5+49/100
(5x-7/10)square=349/100
(5x-7/10) = root349/100
5x-7/10=17/10
5x-7=17
5x=17+7
5x=24
x=24/5
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