Math, asked by pritishetty8981, 10 months ago

(ii) If a + b = 8, ab = 15, find a3 + b3.​

Answers

Answered by onlyforcoccockk
15

answer answer refers to image

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Answered by SerenaBochenek
19

The value of "a³+b³" will be "152". Further explanation is given below.

Step-by-step explanation:

Given:

(a+b) = 8

ab = 15

As we know,

(a+b)³ = a³+b³+3ab(a+b)

On putting the value of (a+b) and ab in the above formula, we get

⇒ (8³) = a³+b³+3×15(8)

⇒ 8×8×8 = a³+b³+3×120

⇒ 512 = a³+b³+360

⇒ 512-360 = a³+b³

⇒ 152 =  a³+b³

a³+b³ = 152

Learn more:

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