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Anni [7]
2 years ago
12

What value is needed to complete the square? Show all steps X^2-2x+___

Mathematics
1 answer:
BartSMP [9]2 years ago
3 0

The perfect square trinomial is x² - 2x + 1.

Hence, the value needed to complete the square of the expression ( x² - 2x + --- ) is 1.

<h3>What value is needed to complete the square?</h3>

The quadratic expression in its standard form is;

ax² + bx + c

Given the expression in the question;

x² - 2x + ------

Compared with the standard for a quadratic expression

  • a = 1
  • b = -2
  • c = ?

Let the missing value be represented by "c"

x² - 2x + c

Now, to find the value of c, we divide the coefficient of x by 2 and then square the result.

Note that, coefficient of x is b

c = ( b/2 )²

We substitute

c = ( -2/2 )²

c = ( -1 )²

c = 1

The perfect square trinomial is x² - 2x + 1.

Hence, the value needed to complete the square of the expression ( x² - 2x + --- ) is 1.

Learn more about quadratic expressions here: brainly.com/question/12356597

#SPJ1

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8 0
3 years ago
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7 - 9x - 15 + 12x HELPPPP
Gekata [30.6K]

Simplify. Combine like terms

12x - 9x = 3x

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8 0
3 years ago
If x + y = 10 and x - y = 4, find the value of x² - y²
morpeh [17]

Answer:

x²-y² = 40

Step-by-step explanation:

Factorising x²-y²:

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This is due to the property that states:

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Substituting the given values into the above equation:

x²-y² = (10)(4)

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Hence, x²-y² = 40

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8 0
2 years ago
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3x + ky = 8
djyliett [7]

Answer:

a) 3x + ky = 8

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