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rosijanka [135]
3 years ago
15

Factor this trinomial 4x^2-6x-10 If you can please try to show me how to do it.

Mathematics
1 answer:
lilavasa [31]3 years ago
8 0

Answer:

=2(2x-5)(x+1)

Step-by-step explanation:

So we have the trinomial:

4x^2-6x-10

First, factor out a 2:

=2(2x^2-3x-5)

Now, factor within the parentheses.

To do so, we want to find two numbers. When multiplied, these two numbers must equal (a)(c) and when added, they must equal b

(a)(c) is 2(-5) or -10 and b is -3. So, we want two numbers that when multiplied together gives -10 and when added gives -3.

-5 and 2 works. Therefore:

=2(2x^2-3x-5)

Replace -3x with 2x and -5x:

=2(2x^2+2x-5x-5)

Factor out a 2x for the first two terms. And factor out a negative 5 for the remaining two:

=2(2x(x+1)-5(x+1))

Grouping:

=2(2x-5)(x+1)

And we're done!

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Explanation:

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the quotient of a number xxx and 555 = a number xxx divided by 555

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3 years ago
Julie built a tower of blocks that stood 22.5 cm tall. Each block is 1.5 cm tall. How many blocks are in the tower? A. 16 B. 15
sergejj [24]
22.5 cm* (1 block/ 1.5 cm)= 15 blocks.

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7 0
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Mrs. Hoffnagle's class is practicing skip counting by 30's . The first student said 30, the second said 60, and the third said 9
nadezda [96]

Answer:

120

Step-by-step explanation:

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3 0
3 years ago
(3 x 10) X 8 =_<br> X (10 X 8)<br> Uruekne kdnbfbd
Amiraneli [1.4K]

Step-by-step explanation:

(3 × 10) × 8 = 3 × (10 × 8)

It's an Associative Property of addition:

<em>(a + b) + c = a + (b + c)</em>

<em></em>

Check it:

Left side: (3 × 10) × 8 = 30 × 8 = 240

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4 0
3 years ago
WOULD THIS BE RIGHTTT PLEASE NO BS
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Answer:

no its not right

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