3 years ago

Which is equivalent to (−2m + 5n)², and what type of special product is it?

1 answer:

4 0

(-2m + 5n)²

(-2m + 5n) (-2m + 5n)
-2m(-2m + 5n) + 5n(-2m + 5n)

4m² - 10mn - 10mn + 25n²
4m² - 20mn + 25n²

4m²⇒ -2m * -2m
-20mn ⇒ 2(-2m)(5n)
25n² ⇒ 5n * 5n

<span>C. 4m² − 20mn + 25n²; a perfect square trinomial</span>

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F(x) = x3 – 4x² - 6x – 32 at x = 6

scoundrel [369]

Answer:

X= 140

Step-by-step explanation:

f(x) = x3 – 4x² - 6x – 32 at x = 6

(6)(6)(6) -4²=72

-6(6)-32= -68

72+68=140

3 0

3 years ago

When you owe money, you have a negative balance. You owe $200 to your bank. You pay $30 back. What is your new bank balance?

Mandarinka [93]

So in this problem we need to do some addition.

take the starting balance (-200) and add it to the amount you paid back (30)

-200 + 30 = -170

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3 years ago

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What are the potential solutions of In(x2 - 25) = 0?

Paha777 [63]

Answer:

$x=\pm\sqrt{26}$

Step-by-step explanation:

$ln(x^2-25)=0$

$e^{ln(x^2-25)}=e^0$

$x^2-25=1$

$x^2=26$

$x=\pm\sqrt{26}$

7 0

3 years ago

What is the value of x in the equation 3/2 (4X - 1) - 3x = 5/4 - (x +2)

Leokris [45]

Step-by-step explanation:

3/2(4x-1)-3x = 5/4-(x+2)

6x -3/2 -3x = 5/4 -x -2

3x -3/2 = 5/4-2-x

4x=5/4 -2 +3/2

4x= (5-8+6)/4

4x=3/4

x=3/16

6 0

3 years ago

Howis 1/8 greater than 3/16?

Basile [38]

You have $\dfrac18=\dfrac2{16}$ , so that's not true.

8 0

3 years ago