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drek231 [11]
4 years ago
13

How to complete the square of x^2+8x+15=0

Mathematics
1 answer:
earnstyle [38]4 years ago
6 0

Answer:

x= -3, -5

Step-by-step explanation:

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Evaluate the expression for the given value of the variable(s). 5a + 5b; a = -6, b = -5
Vika [28.1K]
Your answer is A. You literally plug in the numbers for a and b to solve for the equation.

4 0
3 years ago
I need help can someone help
zaharov [31]

Answer:

yes i can but will have to get back to you in about half a hour just doing maths atm with the teacher

Step-by-step explanation:

4 0
3 years ago
The solutions to a certain quadratic equation are x = -4 and x = 3. Write the equation in standard form below.
saw5 [17]

Answer:

x^2 + x -12

Step-by-step explanation:

If the solutions are x=-4 and x=3, then it must have factors (x+4)(x-3). Assuming there is no GCF or leading coefficient other than 1, multiply with FOIL to find the standard form.

(x+4)(x-3)\\x^2 + 4x -3x -12\\x^2 + x -12

7 0
3 years ago
Read 2 more answers
Solve the system of equations by the addition method <br> { 5x-y=-3<br> { 4x+3y=-48
Svetach [21]

Answer:

(-3,-12)

Step-by-step explanation:

Multiply the first equation by three to match the second equations y-term

  • 3(5x-y=-3)
  • 4x+3y=-48

  • 15x-3y=-9
  • 4x+3y=-48

The y-terms cancel out

  • 15x=-9
  • 4x=-48

Add the x-terms with each other and the terms after the equal sign as well

  • 19x=-57

Divide -57 by 19

  • x=-3

Input your x-term (-3) into one of the two first equations and multiply

Either:

  • 5(-3)-y=-3 or
  • 4(-3)+3y=-48

  • -15-y=-3 or
  • -12+3y=-48

Simplify your terms

  • -y=12
  • 3y=-36

Divide

  • y=-12
  • y=-12
4 0
3 years ago
if the farm needs to pack 12,70,224 litchis in boxes that hold 144 litchis ,how many boxes would be required .​
uysha [10]

For this, we will divide 1,270,224 by 144.

1,270,224 ÷ 144 = 8,821.

For this result, we can conclude that the number of boxes required to pack 1,270,224 litchis is 8,821 boxes.

7 0
3 years ago
Read 2 more answers
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