Question

m^3 - 5m^5 + 75m - 125 verify m =-2

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Answer 1

Step-by-step explanation:

the LCM AND hcf of (m2-2m-15), (m3-125-15m2+75m) and (m2-125)

HCF = m-5

LCM = (m+3)(m-5)*(m+5)

Step-by-step explanation:

m²-2m-15

= m? - 5m + 3m - 15

= m(m-5) +3(m-5)

= (m+3)(m-5)

m3-125 - 15m2+75m

a - b3 = (a-b)(a? +b² + ab) a = m b = 5

m3-125 = (m-5)(m2 + 25 + 5m)

= (m-5)(m²+25 + 5m) -15m(m-5)

(m-5)(m² -10m + 25)

=(m-5)(m-5)2

m2-125

=(m+5)(m-5)

HCF = m-5

LCM = (m+3)(m-5)(m-5)2(m+5) = (m+3) (m-5) (m+5)

Answer 2

Step-by-step explanation:

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