Question

solve the following quadratic equation by factorisation​

Answer 1

Answer:

5 or -3/5

Step-by-step explanation:

5m²-22m-15=0

[∵5m²×-15=-75m²

  -25m×3m=-75m²

  -25m+3m=22m]

5m²-25m+3m-15=0

5m(m-5)+3(m-5)=0

(m-5)(5m+3)=0

m-5=0 and 5m+3=0

m=5 or m=-3/5

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Answer 2

Answer:

m¹= -⅗,m²=5

Step-by-step explanation:

5m²+3m-25m-15=0

m×(5m+3)-25m-15=0

m×(5m+3)-5(5m+3=0

5m+3)×(m-5)=0

5m+3=0

m-5=0

m=-⅗

m=5

m¹=-⅗

m²=5

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