SOLUTION: Please help me solve this equation: 5x2-3(x2-3x)+5x+7

Question 445033: Please help me solve this equation: 5x2-3(x2-3x)+5x+7
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
5x2-3(x2-3x)+5x+7
5x^2-3x^2+9x+5x+7
2x^2+14x+7

x=(-14+-sqrt[14^2-4*2*7])/2*2
x=(-14+-sqrt[196-56])/4
x=(-14+-sqrt140)/4
x=(-14+-11.83)/4
x=(-14-11.83)/4
x=(-25.83)/4
x=-6.458 ans.
x=(-14+11.83)/4
x=-2.17/4
x=0.54 ans.
RELATED QUESTIONS
please help me to solve this quadratic equation 3(x2+7), thank you (answered by Alan3354)

Please help me solve this... (answered by ewatrrr)

Please help me solve this equation: 3x+2y=7... (answered by jim_thompson5910)

Please help me solve for x in this problem 3/(5x)-4/(3x)=7... (answered by josmiceli)

please help me solve this equation:... (answered by elima)

Please help me solve this equation: {{{ 5x-7=0... (answered by ellygirl5969)

Please help me solve this equation:... (answered by Got_2_get_it)

Please help me solve this equation by multiplying... (answered by jim_thompson5910)

Please help me solve this equation {{{ log(3x+2) - 2logx = 1 - log (5x-3)... (answered by Alan3354)