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3 years ago

Can I get some help somebody? reward brainiest

Mathematics

1 answer:

OLEGan [10]3 years ago

6 0

Answer:

Step-by-step explanation:

1). x² - 8x

To convert this expression into a perfect square trinomial,

x² - 2(4x) + 4² = (x - 2)²

Therefore , 4² = 16 should be added.

Option (4) is the answer.

2). x² + 2x = 3

x² + 2(1)(x) = 3

x² + 2(1)(x) + 1 = 3 + 1 [By adding 1 on both the sides]

(x + 1)² = 4

x + 1 = ±2

x = -3, -1

Option (1) is the answer.

3). 3x²- 18x = 21

x² - 6x = 7

x² - 2(3x) = 7

x² - 2(3x) + 3² = 7 + 3²

(x - 3)² = 7 + 9

(x - 3)² = 16

x - 3 = ±4

x = -1, 7

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sergiy2304 [10]

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2 years ago

Your bank balance decreased by $9.54 on Monday, and you made a $17.23 deposit on Tuesday. On Wednesday, you spent $4.67 from you

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3 years ago

Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.00 × 10 − 4 m², and the speed of the

Setler79 [48]

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Given

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3 years ago

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3 years ago

(3x3 + 11x2 + 4x + 1)/ (x2 + x)

lions [1.4K]

If those are exponents, then...

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----------------------------- Cancel out the x with the 4x
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3 years ago