Question

-(m+2)(9m -1)+(m + 3)(9m – 8) при m = -3,5.​

Answer 1

Ответ:

держи тут ответ написан

Answer 2

Ответ:

-(9m²-m+18m-2)+(9m²-8m+27m-24)=

-9m²+m-18m+2+9m²-8m+27m-24=

2m-22=2(m-11)

Answer 3

To evaluate the expression -(m+2)(9m -1)+(m + 3)(9m – 8) when m = -3.5, we substitute -3.5 for m and perform the calculations.

Let's start by substituting the value of m into the expression:

-(m+2)(9m -1)+(m + 3)(9m – 8) = -(-3.5 + 2)(9(-3.5) - 1) + (-3.5 + 3)(9(-3.5) – 8)

Now we simplify each part of the expression:

-(-3.5 + 2) = -( -1.5) = 1.5 9(-3.5) - 1 = -31.5 - 1 = -32.5 -(-3.5 + 3) = -(-0.5) = 0.5 9(-3.5) – 8 = -31.5 – 8 = -39.5

Substituting the simplified values back into the expression, we have:

1.5*(-32.5) + 0.5*(-39.5)

Now we calculate the multiplication and addition:

= -48.75 - 19.75 = -68.5

Therefore, when m = -3.5, the value of the expression -(m+2)(9m -1)+(m + 3)(9m – 8) is -68.5.