Q12 of 95 Page 93

If find the value of
(i) (ii)

(i)

We know that,

From formula (a – b)² = a² + b² – 2ab

So, by putting the values, we get,

= 5² =

(ii)

We know that,

From formula (a + b)² = a² + b² + 2ab

So, by putting the values, we get,

= 27² =

Find the value of the expression (36x² + 25y² – 60xy) when and

If find the values of

(i) (ii)

Find the continued product:

(i) (x +1)(x – 1)(x² + 1)

(ii) (x- 3)(x + 3)(x² + 9)

(iii) (3x – 2y)(3x + 2y)(9x² + 4y²)

(iv) (2p + 3)(2p – 3)(4p² + 9)

If x + y = 12 and xy = 14, find the value of (x² + y²).

If find the value of(i) (ii)