Question

—————-must be subtracted from -3x^2+2x +8 to get - x/^2 +6x+7
2. If x=y=-3 then, the value of (x-7)(2x^2+3xy+9y^2) is———————
3. 25x25 -2 X25X25+ 25x25 is equal to—————————
4. Ifx+y = 13 and xy = 7 then (x^2 + y^2) is equal to—————-
5. The product (x^2 - 1)(x^4 + x^2 + 1) is equal to————————

Answer 1

Answer:

1. -2x2+8x-15
2. -1260
3. 8.8817842e34