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3 years ago

What is the simplified form of this expression? (-3x2 + 2x − 4) + (4x2 + 5x + 9)

Mathematics

2 answers:

olga2289 [7]3 years ago

3 0

Answer:

I hope it helps you......

olya-2409 [2.1K]3 years ago

3 0

Answer:

$\large \boxed{\sf \ \ x^2 + 7x + 5 \ \ }$

Step-by-step explanation:

$\mathrm{\sf (-3x^2 + 2x -4) + (4x^2 + 5x + 9)}$

Remove brackets.

$\large{\sf -3x^2 + 2x -4 + 4x^2 + 5x + 9}$

Group like terms.

$\large{\sf -3x^2 + 4x^2 + 2x + 5x + 9 -4}$

Combine like terms.

$\large{\sf x^2 + 7x + 5}$

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Evaluate the expression x^4+9x^2 when x=-3

aalyn [17]

Answer:

162

Step-by-step explanation:

Step 1: Define

x⁴ + 9x²

x = -3

Step 2: Substitute and Evaluate

(-3)⁴ + 9(-3)²

81 + 9(9)

81 + 81

162

6 0

3 years ago

Read 2 more answers

Can anyone answer both of these?

astraxan [27]

Answer:

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Step-by-step explanation:

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4 years ago

What does 2.45×3.6=? equal

love history [14]

It equals to 8.82
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3 years ago

Points (1,3), (-4,7), and (-29,K) are collinear. Find K. How do i solve this?

oee [108]

Co linear points have same slope
Points (1,3), (-4,7), and (-29,K)
m1,2=7-3/-4-1=-4/5

m2,3=K-7/-29+4
m2,3=K-7/-25

-4/5=K-7/-25
4/5=K-7/25
4=K-7/5
20=K-7
K=27

3 0

3 years ago

a survey was done Of 600 shoppers at a grocery store to determine if they like a new flavor Of potato chip. Of the 600 shoppers,

olasank [31]

Answer:

63%

225 buyers

Step-by-step explanation:

To find the percent take the number that liked it over the total

376/600

Change to decimal form

.62666666

Change to percent by multiplying by 100

62.66666666%

The nearest percent is 63%

37.5 % would but it then multiply by the number of shoppers

37.5 % ( 600)

Change to decimal form

.375 * 600

225

7 0

3 years ago