SOLUTION: I have this math problem 5x^2 -7x-3=0. I am thinking there is no solution to this problem but i may be incorrect. The reason I feel this way because I can not find an equation th
Question 474144: I have this math problem 5x^2 -7x-3=0. I am thinking there is no solution to this problem but i may be incorrect. The reason I feel this way because I can not find an equation that will equal 7 and come out three. I am really lost. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! I have this math problem 5x^2 -7x-3=0. I am thinking there is no solution to this problem but i may be incorrect. The reason I feel this way because I can not find an equation that will equal 7 and come out three. I am really lost.
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A = 5
B = -7
C = -3
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The AC-Method requires that you find
2 numbers whose product is AC = -15
and whose sum or difference = -7
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But the only products are 1;15 and 3;5
No sum or difference equals -7.
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So you'll have to use the Quadratic formula:
x = [7 +- sqrt(49-4*5*-3)]/10
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x = [7 +- sqrt(109)]/10
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Cheers,
Stan H.
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