Question

(2*x-3)*(x-1)-(x+3)*(3*x-1),если x=-3

Answer 1

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Answer 2

2x²-2x-3x+3-(3x²-x-9+3)
2x²-2x-3x+3-3x²+x+9x-3
2*9-2*(-3)-3*(-3)+3-3*9+(-3)+9-3
18+6+9+3-21-3-27-3-30
24+12-24-30
12-30
-18

Answer 3

To evaluate the expression (2x-3)(x-1) - (x+3)(3x-1) when x = -3, you simply substitute -3 for x and perform the calculations:

(2*(-3) - 3)(-3 - 1) - (-3 + 3)(3*(-3) - 1)

Now, follow the order of operations (PEMDAS/BODMAS) to simplify the expression:

(-6 - 3)(-4) - (0)(9 - 1)

Now, continue simplifying:

(-9)(-4) - 08

(-9)*(-4) - 0

36 - 0

The result is 36. So, when x = -3, the expression (2x-3)(x-1) - (x+3)(3x-1) equals 36.