If C, equals, x, minus, 9, x, squaredC=x−9x
2
and D, equals, minus, x, plus, 3, commaD=−x+3, find an expression that equals 3, C, minus, D3C−D in standard form.
To find the expression that equals 3C - D, we substitute the values of C and D:
3C - D = 3(x - 9x^2) - (-x + 3)
Simplifying the expression:
= 3x - 27x^2 + x - 3
Now, combining like terms:
= -27x^2 + 4x - 3
So, the expression that equals 3C - D in standard form is -27x^2 + 4x - 3.