The sum of `x-3` and `12+2x`......

Add 2x^2-3x+1 to the sum of 3x^2-2x and 3x+7.

From the sum of 4+3x and 5-4x+2x^(2) subtract the sum of 3x^(2)-5x and -x^(2)+2x+5

Subtract the sum of 5x - 4y + 6z and -8x + y - 2z from the sum of 12x - y + 3z and -3x + 5y - 8z

The average of X_(1),backslash X_(2) and X_(3) is 14. Twice the sum of X_(2) and X_(3) is 30. What is the value of X_(1)?( a) 12 (b) 16(c)20 (d) 27

In the product of (5x +2) and (2x ^(2) - 3x +5), the sum of the coefficients of x ^(2) and x is

The sum of the non-real root of (x^(2)+x-2)(x^(2)+x-3)=12 is -1 b.1 .-6 d.6