If you mean: 2x2+11x+15 then it is (2x+5)(x+3) when factored
2x2 + 7x - 15 = (2x - 3)(x + 5)
15 to the 2nd power or 15 squared equals 15 * 15 which equals 225.
initial problem: 5*m=15 divide both sides by 5: m=(15)/(5) solution: m=3
15 times 15 equals 225.
Factors: (2x + 3)( x - 5) so x = -1.5 or 5
2x2 + 11x + 15 = (x + 3)(2x + 5).
2x2 - x - 15 = 0(2x + 5) (x - 3) = 0[2x + 5 = 0] and [x - 3 = 0]x = -5/2 and x = 3{-2.5, 3}
the empty set.
It is: x = 5/3 and x = -3
2x2 + 15 = 11x ? Can be only for some values of x.2x2 + 15 = 11x subtract 11x to both sides2x2 - 11x + 15 = 0(2x - 5)(x - 3) = 02x - 5 = 0 or x - 3 = 0x = 5/2 or x = 3
2x2 + 7x - 15 = 02x2 + 10x - 3x - 15 = 0(2x2 - 3x) + (10x - 15) = 0x(2x - 3) + 5(2x - 3) = 0(2x - 3)(x + 5) = 0(2x - 3) = 0 or (x + 5) = 0x = 3/2 or x = -5
2(4)^2 - 1 = 4(4) + 15 31 = 31 yes!
3x2-4x-15 = 0 (3x+5)(x-3) = 0 x = -5/3 or x = 3
5x = 15 so x = 15/5 = 3
If you mean: 2x2+11x+15 then it is (2x+5)(x+3) when factored
2x2+13x+15 = (2x+3)(x+5)