Question

(m + 5)2 — (m — 4) (m+ 4) найдите его значение при т = -3,5

Answer 1

(m + 5)2 — (m — 4) (m+ 4)=m^2+10m+25-m^2+16=10m+41 подставляем значение (-3,5)

10m+41=10•(-3,5)+41=-35+41=6

Answer 2

To find the value of the expression (m + 5)^2 - (m - 4)(m + 4) when t = -3.5, we need to substitute m = -3.5 into the expression and calculate the result.

Let's plug in m = -3.5 and simplify the expression:

((-3.5 + 5)^2) - ((-3.5 - 4)(-3.5 + 4))

First, we'll simplify the terms inside the parentheses:

(1.5^2) - (-7.5)(0.5)

Next, we'll calculate the square of 1.5:

(2.25) - (-7.5)(0.5)

Now, we'll calculate the product of -7.5 and 0.5:

2.25 - (-3.75)

To subtract a negative number, we can change the subtraction to addition:

2.25 + 3.75

Finally, we'll add the two numbers:

6.0

Therefore, when t = -3.5, the value of the expression (m + 5)^2 - (m - 4)(m + 4) is 6.0.