15x²-28=x
factorisation method
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Step-by-step explanation:
15x^2-28-x=0
15x^2-x-28=0
15x^2-21x-20x-28 =0
3x (5x-7)-4 (5x-7)=0
(3x-4)(5x-7)=0
x=4/3 OR x=7/5
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