factorise 2x2 + x - 15
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Answer:x=5/2 or x=-3
Step-by-step explanation:2x^2+X-15
PRODUCT=2 × -15 = -30
SUM= 1
Factor= 30=2×3×5=6×5
Since product is -30 and sum is +1 factors are { +6,-5}
2x^2+6x-5x-15
2x ( x+3). -5(x + 3)
2x-5=0. X+3=0
X=5/2. X=-3
Therefore the factor are 5/2 and -3
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