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Coordinate Geometry
Question
Wired Faculty App

Use suitable identities to find the following products:

(x + 8)(x - 10)

Answer

x + 8)(x - 10)
(x + 8)(x - 10) = (x + 8){x + (- 10)}
= x2 + {8 + (- 10)}x + (8)(- 10)
| Using Identity IV
= x2 - 2x - 80.

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Some More Questions From Coordinate Geometry Chapter

Find the value of n, given (81)5/n = 243.

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

4x2 - 3x + 7