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Coordinate Geometry

Question
CBSEENMA9001819
Wired Faculty App

15. Factorise:
a2 + b2 - 2 (ab - ac + bc)

Solution

 a2 + b2 - 2(ab - ac + bc)
= a2 + b2 - 2ab + 2ac - 2bc
= (a - b)2 + 2c(a - b)
= (a - b) (a - b + 2c).

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

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