Bring the 35 to the Left hand side, then use the quadratic equation (if you cant find the factors in an easier way).
You start it, I can fill in your blanks : )
solve equation by factoring 3m^2-8m=35
I need to show full work as well please help
2 answers
3m^2 - 8m - 35 = 0,
A*C = 3*(-35) = -105 = 7 * (-15),
Choose the set of factors whose sum = -8.
3m^2 + (7m - 15m) - 35 = 0,
(3m^2 + 7m) + (-15m - 35) = 0,
m(3m + 7) - 5(3m + 7) = 0,
(3m + 7)(m - 5) = 0,
3m + 7 = 0, m = -7/3.
m-5 = 0, m = 5.
A*C = 3*(-35) = -105 = 7 * (-15),
Choose the set of factors whose sum = -8.
3m^2 + (7m - 15m) - 35 = 0,
(3m^2 + 7m) + (-15m - 35) = 0,
m(3m + 7) - 5(3m + 7) = 0,
(3m + 7)(m - 5) = 0,
3m + 7 = 0, m = -7/3.
m-5 = 0, m = 5.
1 answer