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

Given,(36x2 + 25y2 – 60xy)X = Y = With the help of the formula (a - b)2 we get;= (6x)2 + (5y)2 – 2(6x)(5y)= (6x – 5y)2= = (4 – 1)2= (3)2 = 9

Q10 of 95 Page 93

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

Given,

(36x² + 25y² – 60xy)

X =

Y =

With the help of the formula (a - b)² we get;

= (6x)² + (5y)² – 2(6x)(5y)

= (6x – 5y)²

= (4 – 1)²

= (3)² = 9

Find the value of the expression (9x² + 24x + 16), when x = 12.

Find the value of the expression (64x² + 81y² + 144xy), when x = 11 and .

If find the values of

(i) (ii)

If find the value of

(i) (ii)