using suitable identity expand (5/4x+3/4)³
Answers
Answered by
6
Answer:
identity used (a+b)^3 = a^3 + 3a^2b + 3ab^2 + b^3
Step-by-step explanation:
=125/64x³ + 3×25/16x²×3/4 + 3×5/4x×9/16 + 27/64
=125/64x³ + 225/64x² + 135/64x + 27/64
=1/64(125x³+225x²+135x+27)
Answered by
3
Answer:
identity used (a+b)^3 = a^3 + 3a^2b + 3ab^2 + b^3
Step-by-step explanation:
=125/64x³ + 3×25/16x²×3/4 + 3×5/4x×9/16 + 27/64
=125/64x³ + 225/64x² + 135/64x + 27/64
=1/64(125x³+225x²+135x+27)
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