Evaluate 4X^3 +3Y^3, IF X=2 AND Y=5
I am not sure how to work this out
just evaluate
4(2^3) + 3(5^3)
= 4(8) + 3(125)
= ......
4 x 2 = 8 (to the third) which is 512 + 3 x 5 which is 15 (to the third) which is 3,375 all together it equals 3,887 (your answer)
keke would be correct had the question said
(4x)^3+ (3y)^3
but it said
4x^3 + 3y^3
To evaluate the expression 4X^3 + 3Y^3 when X = 2 and Y = 5, start by substituting the values of X and Y into the expression.
For X = 2:
4X^3 = 4 * (2)^3 = 4 * 8 = 32
For Y = 5:
3Y^3 = 3 * (5)^3 = 3 * 125 = 375
So, 4X^3 + 3Y^3 = 32 + 375 = 407
Therefore, when X = 2 and Y = 5, the value of the expression 4X^3 + 3Y^3 is 407.