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Coordinate Geometry
Question
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Evaluate using suitable identify: (999)3.

Answer

 (999)3
= (1000 - 1)3
= (1000)3 - (1)3 - 3(1000)(1) (1000 - 1)
= 1000 000 000 - 1 - 3000 × 999
= 1000 000 000 - 1 - 2997000
= 997002999

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Some More Questions From Coordinate Geometry Chapter

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.

4x2 - 3x + 7

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.

x10+ y3 + t50

Write the coefficients of x2 in each of the following:

2 + x2 + x

Write the coefficients of x2 in each of the following:
2 - x2 + x3