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Coordinate Geometry
Question
Wired Faculty App

Factorise each of the following:

a4 - b4    (b)a4 - 16b4

Answer

a4 - b4
a4 - b4 = (a2)2 - (b2)2 = (a2 + b2) (a2 - b2)
| Using Identity III
= (a2 + b2)(a + b)(a - b)
| Using Identity III

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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