soles by factorisstiss
5 m2 = 22 m + 15
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5m² - 22m + 15
25m - 22m + 15
3m + 15
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Answer:
5m²=22m + 15
5m²-22m-15=0
we need to split the coefficient of m in numbers whose product is (-15)×(5)=(-75) and whose sum is -22
upon thinking, we find that such numbers are -25 and 3
5m²- 25m+3m-15 =0
5m(m-5) +3(m-5)=0
(m-5)(5m+3)=0
now for this product to be zero, either one or both of these have to be zero. thus, we get
x=5
or
x= -5/3
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