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kkurt [141]
1 year ago
15

Simplify expression(5x^2-2x+3)+(-6x^2+4x-7)

Mathematics
1 answer:
Natali5045456 [20]1 year ago
3 0

Given the expression:

\mleft(5x^2-2x+3\mright)+\mleft(-6x^2+4x-7\mright)

To simplify the expression, we will combine the like terms

so,

\begin{gathered} \mleft(5x^2-2x+3\mright)+\mleft(-6x^2+4x-7\mright) \\ =(5x^2-6x^2)+(-2x+4x)+(3-7) \\  \\ =-x^2+2x-4 \end{gathered}

So, the answer will be:

-x^2+2x-4

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SYSTEM OF LINNEAR EQUATIONS!
GREYUIT [131]

Answer:

Step-by-step explanation:

2x+3y=15

x-3y=18

------------------

x=3y+18

2(3y+18)+3y=15

6y+36+3y=15

9y=15-36

9y=-21

y=-21/9

simplify

y=-7/3

x-3(-7/3)=18

x+7=18

x=18-7

x=11

Answer: x=11, y=-7/3. (11, -7/3).

---------------------------------------------

2x+3y=20

-2x+y=20

----------------

4y=40

y=40/4

y=10

2x+3(10)=20

2x+30=20

2x=20-30

2x=-10

x=-10/2

x=-5

Answer: x=-5, y=10. (-5, 10).

-------------------------------------------

3x-4y=-5

-10x+4y=12

--------------------

-7x=7

x=7/-7

x=-1

3(-1)-4y=-5

-3-4y=-5

4y=-3-(-5)

4y=-3+5

4y=2

y=2/4

simplify

y=1/2

Answer: x=-1, y=1/2. (-1, 1/2).

6 0
4 years ago
Please help me!!!! I really need it
Ivenika [448]

Answer:

x = 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

x/2 + 3 = 5

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Subtract 3 on both sides:                    x/2 = 2
  2. Multiply 2 on both sides:                     x = 4
7 0
3 years ago
Read 2 more answers
If 65% equals 52, what does 35% equal then?
satela [25.4K]

Answer:

28

Step-by-step explanation:

65% of x = 52

x= 52*100/65 = 80

now

35% of 80 = 35/100 * 80 = 28

7 0
4 years ago
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If you frequently feel stressed and have less than 12 years of education, do you stretch it shrink your life span? By how many y
GaryK [48]
You should stretch it by 30 years at least
6 0
3 years ago
-11b+7=2b solve for b
Jlenok [28]

Answer:

7/13=b

Step-by-step explanation:

-11b+7=2b

7=13b add 11 b to both sides

b=7/13 divide by 13

Hope this helps plz hit the crown :D

6 0
3 years ago
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