SOLUTION: (5x-1)^2
I know the answer is 25x^2-10x+1
But when I try to solve I only come up with 25x^2+1
I don't understand where the -10x comes from,
I appreciate any help,
than
Algebra.Com
Question 541506: (5x-1)^2
I know the answer is 25x^2-10x+1
But when I try to solve I only come up with 25x^2+1
I don't understand where the -10x comes from,
I appreciate any help,
thank you!!
Found 3 solutions by Earlsdon, friesr, josmiceli:
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Use the FOIL method to multiply the binomials:
Simplify to:
Answer by friesr(113) (Show Source): You can put this solution on YOUR website!
The perfect square factoring formula is:
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Your problem:
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Your answer:
===
You may want to note these formulas for the future:
1. Difference of squares
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2. Perfect square
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3. Perfect square
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4. Difference of cubes
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5. Sum of cubes
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Here is a general case of the squaring:
--------------
Now your problem:
In the FOIL method, the terms come
from the Outer and Inner multiplications.
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