3 years ago

I need help on this (-4)² help me

Mathematics

1 answer:

zavuch27 [327]3 years ago

8 0

Answer:

Step-by-step explanation:

To have anything to a power is just multiplying the number as many times as it says to. ex. 2^3 is two times itself 3 times. 2 x 2 x 2= 8

In your case, you need to multiply -4 x -4 because the exponents tell you how many of the number you multiply.

-4 x -4 = 16

Hope this helps :)

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Which expression is the product of (x + 4i)(x − 4i)(x + 4)?

Sophie [7]

Answer= x³+4x²+16x+64

Expand the following:(x + 4 i) (x - 4 i) (x + 4)
(x - 4 i) (x + 4) = (x) (x) + (x) (4) + (-4 i) (x) + (-4 i) (4) = x^2 + 4 x - 4 i x - 16 i = -16 i + (4 - 4 i) x + x^2:
-16 i + (-4 i + 4) x + x^2 (4 i + x)
| | | | x | + | 4 i
| | x^2 | + | (4 - 4 i) x | - | 16 i
| | | | (-16 i) x | + | 64
| | (4 - 4 i) x^2 | + | (16 + 16 i) x | + | 0
x^3 | + | (4 i) x^2 | + | 0 | + | 0
x^3 | + | 4 x^2 | + | 16 x | + | 64:
Answer: x^3 + 4 x^2 + 16 x + 64

7 0

3 years ago

Read 2 more answers

If you can help it would mean a lot

irina [24]

Answer:

z=66

Step-by-step explanation:

Since VX is a mid-segment of UWY:

$\frac{z - 33}{z} = \frac{1}{2}$