factorise 1000+8x^3
Answers
Answered by
0
Step-by-step explanation:
8(125+x³)
8(5³+x³)
8(5+x)(25-5x+x²)
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Answered by
0
Answer:
8(5 + x)(25 - 5x + x²)
Step-by-step explanation:
We will solve this using the following identity:
x³ + y³ = (x + y)(x² - xy + y²)
Here, we will take x³ = 1000 and y³ = 8x³
So, x = ∛1000 = 10, and y = ∛(8x³) = 2x
Thus,
1000 + 8x³ = (10 + 2x)(100 - 20x + 4x²)
= 8(5 + x)(25 - 5x + x²)
Hence solved
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