Question

Need Help desperately!!!!!!! If x = 2, y = 8, Find (i) x³+y³ (ii) ∛y

Answer 1

(i) 520

(ii) 2

Explanation:

(i)

`x^3+y^3=(2)^3+(8)^3=8+512=520`

(ii)

`\sqrt[3]{y}=\sqrt[3]{8}=2`

Hope this helps!

Answer 2

(i) 520

(ii) 2

Explanation:

(i)

x³+y³=

Plugging in values

`2^3+8^3=\\2*2*2+8*8*8=\\4*2+64*8=\\8+512=\\520`

(ii)

`\sqrt[3]{y}`

Plugging in values

`\sqrt[3]{8} =\\2`

Since 2×2×2=8