If x4 + 2x3 + ax2 + bx + 9 is a perfect square, where a and b are positive real numbers, then the value of a and b are
X4 + 2x3 + ax2 + bx + 9 is perfect Square. ⇒ we know that (a+b+c)2 = a²+b²+C²+2ab+2bc+2ca ⇒ if we take a = x², b = x, c = 3 and put all three values in formula's we get ⇒ (x2+x+3)2 = x4+x²+9+2x3+6x +6x2 ⇒ x4 +7x2 +2x3 +9 +6x ----- (2) Compare eq (2) with Given eq we get ⇒ a = 7 and b = 6
[(15)³ × (8)²] ÷ (90 × 6) = ?²
2856 ÷ 34 = ?% of 240
9 × 40× 242 × 182= ?2
(6 × √361) × 2.5 = ? + 125
255 × 8 + 386 × 5 =? % of 7940
1111.25 × 9.05 + 2323.23 × 9.05 – 2121.37 ×9.05 =?
40% of 1820 + 80% of 630 = 90% of 1280 + ?
If x + y + 3 = 0, then find the value of x3 + y3 – 9xy + 9.
25% of 140 + 2 × 8 = ? + 9 × 5
