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Maverick Roth
2 September, 23:36
What is the value of 5x³+4y³ when x=4 and y=3
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Kinsley Simon
3 September, 01:07
0
Answer: 428
Step-by-step explanation:
This is a substitution problems,
Just substitute for the values of x and y, multiply them out and add.
Here we go;
5x³ + 4y³
= 5 (4³) + 4 (3³)
= 5 (4 x 4 x 4) + 4 (3 x 3 x 3)
= 5 x 64 + 4 x 27
= 320 + 108 add directly or find the common factor
= 4 (80 + 27)
= 4 (107)
= 4 x 107
= 428
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