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2 years ago

(3x^2 + 8x - 4 ) -(-x^2 +5x +2) simplify

Mathematics

2 answers:

Vlad [161]2 years ago

5 0

Answer:

4x^2+3x-2

Step-by-step explanation:

I hope this helps

xxMikexx [17]2 years ago

4 0

Answer:

4x^2+3x-6

Step-by-step explanation:

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8•x + 10 +2x +4 •x + 8 -6

Tcecarenko [31]

Answer:

14x + 12

Step-by-step explanation:

8 times x would be 8x

4 times x would be 4x

8x+10+2x+4x+8-6

8x+2x+4x=14x

10+8-6=12

=14x + 12

5 0

3 years ago

Help for question 7 please

scoray [572]

◆ COMPLEX NUMBERS ◆

$given \: expression \: is \: - \\ \\ - 3 {i}^{4} + 2 {i}^{3} + 2 {i}^{2} + \sqrt{ - 9} \\ \\ we \: know \: that \: , \: \\ i = \sqrt{ - 1} \\ \\ {i}^{2} = - 1 \\ \\ {i}^{3 } = - i \\ \\ {i}^{4} = 1 \\ \\ \\ - 3 {i}^{4} + 2 {i}^{3} + 2 {i}^{2} + \sqrt{9} i \\ = - 3 {i}^{4} + 2 {i}^{3} + 2 {i}^{2} + 3i \\ \\ using \: the \: above \: properties \: of \: iota \: (i) \\ \\ = - 3(1) + 2( - i) + 2( - 1) + 3i \\ \\ = - 3 - 2i - 2 + 3i \\ \\ = (- 5 + i) \: \: \: ans.$

7 0

3 years ago

Read 2 more answers

1/3y+11=1/2y-3 What is y???

olga55 [171]

Answer:

$y=84$

Step-by-step explanation:

$\left(\frac{1}{3}\right)y+11=\left(\frac{1}{2}\right)y-3$

Use distributive property.

$\frac{1}{3}y+11=\frac{1}{2}y-3$

$\frac{1}{3}y+11-11=\frac{1}{2}y-3-11$

$\frac{1}{3}y=\frac{1}{2}y-14$

$\frac{1}{3}y-\frac{1}{2}y=\frac{1}{2}y-14-\frac{1}{2}y$

$-\frac{1}{6}y=-14$

$\left(-\frac{1}{6}y\right)\left(-6\right)=\left(-14\right)\left(-6\right)$

$y=84$

6 0

3 years ago

Read 2 more answers

Find the mode of the data. Please :,(

qwelly [4]

Answer:

The mode is gymnastics

Step-by-step explanation:

The mode of a data set is the number that occurs most frequently in the set. To easily find the mode, put the numbers in order from least to greatest and count how many times each number occurs. The number that occurs the most is the mode!

hope his helps!!!!!!!!!!!!

4 0

3 years ago

Which number is rational? Ο Α. π Ο Β. εξ Ο c. 0.777... Ο D. 0.36458121...

Levart [38]

Step-by-step explanation:

0.777... is rational since it can be put in fraction form which is 7/9

note: if something can be put as an integer/integer its rational

8 0

2 years ago

(3x^2 + 8x - 4 ) -(-x^2 +5x +2) simplify​

(3x^2 + 8x - 4 ) -(-x^2 +5x +2) simplify