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kirill115 [55]
3 years ago
11

Simplify (ab)2 + (b3 - a2) if a = -2 and b = 4

Mathematics
2 answers:
Greeley [361]3 years ago
8 0

Answer:

124

Step-by-step explanation:

(ab)^2 + (b^3 - a^2)

Let a = -2  and b = 4

(-2 *4)^2 + (4^3 - (-2)^2)

Parentheses first

(-8)^2 + (4^3 - (-2)^2)

Then the exponents in the parentheses

(-8)^2 + (64 - 4)

Subtract in the parentheses

(-8)^2 + (60)

Exponents

64 + 60

124

LenKa [72]3 years ago
4 0

Step-by-step explanation:

(-2*4)2+(4×3--2×2)

(-8)2+(12--4)

-16+16

=0

hope this helps

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VikaD [51]

Answer:

the last one

Step-by-step explanation:

6 0
2 years ago
What is the solution for -2 [3.25 + 1/2 divided by 1/4 x (-6)]
Gelneren [198K]

Answer:

-4.5

Step-by-step explanation:

I added 3.25 and .5=3.75. Then i did 0.25*-6=1.5. -1.5+3.75=2.25. 2.25*2=-4.5

5 0
2 years ago
Read 2 more answers
What are the factors of x^2-8x-20
kipiarov [429]

Answer:

(x+2)(x−10)

Step-by-step explanation:

x^2-8x-20

Factoring means  something like  this:

(x+_)(x+_)

Add together to get -8

Multiply together to get -20

think of the two numbers

Try 2 and -10:

2+-10 = -8

2*-10 = -20

Fill in the blanks of  with 2 and -10 to get

(x+_)(x+_) = (x+2)(x−10)

I hope it's right!

6 0
3 years ago
What is the simplified value of the expression below?
aniked [119]

Answer:

4.8

Step-by-step explanation:

24 - 12/2 × 3.2

Division first.

24 - 6 × 3.2

Multiply.

24 - 19.2

Subtract.

= 4.8

6 0
3 years ago
Read 2 more answers
Solve by factoring or finding square roots.<br> x^2 +9x+20=0
Zanzabum
X^2 + 9x + 20
x                5
x                4

(x + 5)(x +4)

x = -5,-4

hope this helps
6 0
3 years ago
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