What is the result of 97^2 but first converted to the bionomic formula? It's important! Thanks!
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Solve the equation
I can't get any further with this task. I know how I have to do it. I just don't have the starting point. Which distance do I have to calculate first and how
(a + b)^2 = a^2 + 2ab + b^2
For a = 90 and b = 7:
(90 + 7)^2 = 90^2 + 2 * 90 * 7 + 7^2
= 8100 + 2 * 90 * 7 + 49
= 8100 + 1260 + 49
= 9410 + 49
= 9459
It’s wrong. The solution is: 9409
Yes, because 8100 + 1260 is not 9410.
Second Binomic Formula:
97^2 = (100-3) * (100-3) = 100*100*100*3 + 3*3
= 10000 – 600 + 9 = 9409
or
First Binomic Formula:
97^2 = (90+7) * (90+7) = 90*90 + 2*90*7 + 7*7
= 8100 + 1260 + 49 = 9409
You are looking for the right formula for feeling, handy and small numbers you should prefer. Here are 100 and 3.
1002 = 2*100*3 + 32 = 10000 – 600 + 9 = 9400 + 9 = 9409