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5x2 + 8x = 7
5x2 + 8x - 7 = 0
This cannot be factorised so the solutions need to be determined using the quadratic formula
The solutions are {-8 ± sqrt[82 - 4*5*(-7)]}/(2*5)
= {-8 ± sqrt[64 + 140]}/10
= {-8 ± sqrt[204]}/10
= -2.22829 and 0.62829 (to 5 dp)
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2 this Domo
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What are the solutions for 5x2-2x plus 16 equals 4x2 plus 6x?
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How many solutions are there for the equation x2 plus 16 equals 8x?
2 this Domo
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Y-8x plus 9y equals?
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What is the polynomial factor of 5x2 plus 8x?
18 because, 5x2=10 10+8=18! Your welcome. It's not a problem at all. I love math!
