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18 August, 07:38

Which describes the solution set of (5x - 1) (x + 2) = 8x - 4?

the equation has one real solution x=-1/5

the equation has no real solution

the equation has two real solutions x=0 x=-5

the equation has two real solutions x=1 x = - 1/5

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  1. 18 August, 07:56
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    (5x-1) (x+2) = 8x-4

    5x²+10x-x-2=8x-4

    5x²+9x-2=8x-4

    5x²+x+2=0

    use the quadratic formula, b²-4ac=1²-4*5*2=1-40=-39, - 39 cannot be square rooted, so the equation has no real solution.
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