Question

Solve for s. And show the working.​

Answer 1

Answer:

Either s=-21 Or s=20

Step-by-step explanation:

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Answer 2

Answer:

-21,20

Step-by-step explanation:

►3s²+3s=1260

►3s²+3s-1260=0

►3(s²+s-420)=0

►s²+s-420=0

►s²+21s-20s-420=0

►s(s+21)-20(s+21)=0

►(s+21)(s-20)=0

►s+21=0 or, s-20=0

so, s = -21, 20