Q12 of 59 Page 162

If x + = 6, find x2 + and x4 +


Squaring both sides of the equation we get




Again Squaring both sides of the above equation we get




More from this chapter

All 59 →
10

If x – y = 3 and xy = 10, find x2 + y.

 11

If x + = 3, find x2 + and x3 +

13

Simplify:

(i) (x + y)2 + (x – y)2;


(ii) (x + y)2 × (x – y)2.

 14

Express the following as difference of two squares:

(i) (x + 2z)(2x + z);


(ii) 4(x + 2y)(2x + y);


(iii) (x + 98)(x + 102);


(iv) 505 × 495.