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ale4655 [162]
3 years ago
9

Show that (5x-7)2 +140x=(5x+7)2​

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
8 0
(5x-7)2 + 140x
= 25x2 - 70x + 14 + 140x
= 25x2 + 70x + 14
= (5x+7)2
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Answer:

1,122

Step-by-step explanation:

this is really simple all you have to do is multiply 33 by 34

write it down on a paper      33

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focus on the four first think of it like 4 x 3 it equals 6 do it again. under the equation put 66. now onto the 3. 3 x 3 it equals 9 do it again now. under 66 add a zero then the 99 now add it all together and it equals 1,122 that is your answer

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2 years ago
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Ewan is building a maze for his pet rats out of 2x4s. He needs two pieces that are 2 ¾ feet long, one that is 3.5 feet long and
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I think there should be more to the question. If you are looking for the best combination to buy it would be two 7 foot boards

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3 years ago
Claire and 4 friends each bought the same pair of shoes and a purse. The sample shoes did not have a price tag, but the purse wa
RoseWind [281]

Answer:

Step-by-step explanation:

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Archy [21]

Answer:

<em>(3) 2-8-4</em>

<em></em>

Step-by-step explanation:

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electronic configuration of sulphur is 2,8,6

when excited, <em>it loses 2 electrons to enter the +2 state</em>

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  2. Find the y-intercept. This can be done by substituting the slope and the coordinates of a point (x, y) on the line in the slope-intercept formula and then solve for b.

Step-by-step explanation:

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