Find the value of ...B​

Kvothe asked Nov 6, 2023

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Find the value of ...B

Kvothe asked Nov 6, 2023

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23 votes

Answer:

b=–2

Explanation:

we've got:

(3+bx)⁵===> b⁵x⁵+15b⁴x⁴+90b³x³+720b²x²+405bx+243

and we've also got the coefficient of x³ as –720

90b³=–720===> b³=–8===> b=–2

Eugenekr answered Nov 10, 2023

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