2 years ago

Which of the following constants can be added to x^2- 3x to form a perfect square trinomlal?

Mathematics

1 answer:

creativ13 [48]2 years ago

8 0

Answer:

A 21/4

Step-by-step explanation:

When forming a perfect square trinomial you need to "complete the square".

All of the steps to completing the square when solving an equation:

1. The leading coefficient must be 1.

2. Divide b by 2.

3. Square (b/2)

4. Add (b/2)^2 to both sides to keep the polynomial balanced.

5. You can now write the perfect square trinomial and solve.

x^2 - 3x

-3/2

(-3/2)^2 = 9/4 = 2 1/4

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2 years ago

If (5x-3y)²=0, then x/y=?

alexandr1967 [171]

Answer:

$\frac{3}{5}$

Step-by-step explanation:

Given

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3 years ago

Read 2 more answers

How to do I solve this

padilas [110]

4. 2b-6+3b=
5b-6=143
5b=143+6
5b=149

b=149
------
5

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3 years ago

The school is t blocks from Jim's house. The library is twice as far as the school is from Jim's house. How far is the library?

Degger [83]

Answer:

2t blocks

Step-by-step explanation:

We measure these distances from Jim's house.

The school is t blocks from Jim's house. Twice that is 2t blocks. Thus, the library is 2t blocks from Jim's house.

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3 years ago