factorise 8x2+26x+15
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Answered by
37
Step-by-step explanation:
8x^2+26x+15=0
{{15×15=120}}
so...
8x^2+(20+6)x+15=0
8x^2+20x+6x+15=0
4x(2x+5)+3(2x+5)=0
(4x+3)(2x+5)
x=-3/4,-5/2
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