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Coordinate Geometry
Question
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Factorise each of the following:

a2 - (b - c)2

Answer

a2 - (b - c)2

a2 - (b - c)2 = {a + (b - c)}{a - (b - c)}
| Using Identity III
= (a + b - c)(a - b + c)
x2 + 7xy + 12y2
x2 + 7xy + 12y2 = x2 + 3xy + 4xy + 12y2
= x(x + 3y) + 4y(x + 3y)
= (x + 3y)(x + 4y)

Sponsor Area

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

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

x10+ y3 + t50