Question

(2x-5y)(3x+7y)(8x-9y)​

Answer 1

(64-574vd04#) /584&& Ysjsj dusk s5#! ₹62:#&&&&$¢¢$$$$$$$

Answer 2

Answer:

(i) x3 -2x2y + 3xy2- y3, 2x3- 5xy2 + 3x2y - 4y3 ... x + 5x + 3x – 3y + 7y – 2y – 2z – 8z + 5z ... If P = 7x2 + 5xy − 9y2, Q = 4y2 − 3x2 − 6xy and R = −4x2 + xy + 5y2, show that P + Q + R = 0.