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MSMRBest ResponseYou've already chosen the best response.2
I'm assuming that means \[2x ^{2} + x = 15\]?
 2 years ago

hoblosBest ResponseYou've already chosen the best response.1
2x2 + x = 15 2x2 + x 15 =0 (2x5)(x+3)=0 x= 5/2 OR x=3
 2 years ago

MSMRBest ResponseYou've already chosen the best response.2
okay, you'll need to use the quadratic formula: \[ \frac{b \pm \sqrt{b ^{2}}  4ac}{2a}\]
 2 years ago

sfozturk61Best ResponseYou've already chosen the best response.1
\[2x^2+x15=0\] \[(2x5)(x+3)=0\] x=2,5 or 3
 2 years ago

hoblosBest ResponseYou've already chosen the best response.1
@sfozturk61 2&5 are not solutions 5/2 & 3 are the only solutions **
 2 years ago

nickupBest ResponseYou've already chosen the best response.0
Rewrite as 2x^2 +6x  5x 15. Now factor by grouping 2x(x +3)  5(x + 3). Factors to (2x 5)(x+3)= 0 x=5/2 and 3
 2 years ago

sfozturk61Best ResponseYou've already chosen the best response.1
@hoblos I mean 2,5 so 2 and one half = 5/2
 2 years ago
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