Math second degree equation

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Hi! I need help with this exercise: 7x^2+5x-3 Thank you.

Oct 16th, 2017

using the formula

x= [-b +- sqrt( b^2 - 4ac)]/2a

here the given equation is 7x^2 + 5x -3,
so, a=7, b=5, c=-3

Hence,

x = [-5 +- sqrt(5^2 - 4 * 7 * -3)] / (2 * 7)
x = [-5 +- sqrt(5^2 + 4 * 7 * 3)] / (2 * 7)
x = [-5 +- sqrt(-109)] / 14
x = [-5 +- sqrt(109)] / 14

Please best my answer if helpful and add me as your tutor for further help :)


Dec 18th, 2014

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