Question
What is the square root of the following?
(x² –14x+49) (x² + 6x + 9)Solution
(x² –14x+49) = (x² –7x-7x+49) =x(x-7)-7(x-7) =(x-7) (x-7) (x² + 6x + 9) (x² + 3x+3x+9 =x(x+3) +3(x+3) =(x+3) (x+3) 
=(x-7) (x+3)
More Previous Year Paper Questions
(? × 3)2 - 85 = 115 × 5 + 69
25% of 160 × 18 = ? – 24
Solve.
15.73 +13.25 +16.73 – 28.71 = 5 ×?
What will come in the place of question mark (?) in the given expression?
√64 X 9 ÷ 3 + 12 X 3 = ? + 36(34.88% of 699.79) + 40.030 × 17.88 of 11.86 + 16.21 =? + (7.22)²
13 X √? + 256 ÷ 4 = 30% of 900 - 50
72 + 122 - 25% of 600 = ?
14% of 700 + 15% of 900 + 10% of 160 = ?
182 – 517 ÷ 11 - √361 = ?
If 1210 ÷ 22 + 1332 ÷ 37 - y + 54 × 3 = 980 ÷ 20 × 144 ÷ 48, then the value of y is:
