Algebra

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Let 7x^2 + 8x = h. What value of h will give us exactly one solution for x?

Guest May 19, 2022

Wsai12 · Answer 1 · 2022-05-19T09:34:24

turn this into: 7x^2 + 8x - h = 0

using the quadratic formula to find the solutions: ${-8 \pm \sqrt{64+28h} \over 14}$

this means that $\sqrt{64+28h}$ = 0

h = $-$ $16\over 7$