Factorise: -5x^2+38x-21
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(X+7) (5x+3) are the factors for the equation 5x^2+38x-21
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Answer:
Step-by-step explanation:
5x^2+10x-21=0
5x^2+35x+3x-21=0
5x(X+7)+3(X+7)=0
(5x+3)(X+7)=0
5x+3=0,X+7=0
X=-3/5,X=-7
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