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CUET
General Test
Quantitative Reasoning
Algebra
If $8a^3 + b^3 = 16$ and $2a + b= 4,$ then find the value of $16a^4 + b^4$.
32
36
28
38
Put the value of,
a = 1, b = 2. These values satisfy equations given in the question.
Now,
16a4 + b4
= 16 × 1 + 24
= 16 + 16 = 32