Question

4m-5m² ----------- при m= -3 2m-3 СРОЧНО РЕШИТЕ!!!

Answer 1

4m-5m2, при m=-3, то (4*-3)-(5-(-3)2)= -12-45=-57
2m-3, при m=-3, то 2*(-3)-3=-6-3=-9

Answer 2

To evaluate the expressions for the given values of "m," we simply need to substitute the value of "m" into each expression and calculate the result. Let's do that:

1. For the expression 4m - 5m² when m = -3: Substitute m = -3 into the expression: 4(-3) - 5(-3)²

   Now, calculate the result: 4(-3) = -12 -5(-3)² = -5 * (-3)² = -5 * 9 = -45

   Finally, subtract the second result from the first: -12 - (-45) = -12 + 45 = 33

   So, the value of the expression 4m - 5m² when m = -3 is 33.

2. For the expression 2m - 3 when m = -3: Substitute m = -3 into the expression: 2(-3) - 3

   Now, calculate the result: 2(-3) = -6

   Finally, subtract the second result from the first: -6 - 3 = -9

   So, the value of the expression 2m - 3 when m = -3 is -9.

Remember, in the first expression, "m" is squared (m²), while in the second expression, it is not squared. Be careful when performing calculations to avoid errors.