Asked by katelynn
I have no idea how tp simplify 2 sq.root20-3 sq.root7-2 sq.root5+4 sq.root63? I guessed 2 sq.root5-3 sq.root7+4 sq.root63 is it right?
Answers
Answered by
MathGuru
I'm going to assume your problem is this:
2√20 - 3√7 - 2√5 + 4√63
√20 breaks down to √5*2*2
√63 breaks down to √7*3*3
Therefore:
2√20 becomes 4√5
4√63 becomes 12√7
Now we have:
4√5 - 3√7 - 2√5 + 12√7
Combine like terms and simplify:
2√5 + 9√7
That is as far as you can go.
I hope this helps and is what you were asking.
2√20 - 3√7 - 2√5 + 4√63
√20 breaks down to √5*2*2
√63 breaks down to √7*3*3
Therefore:
2√20 becomes 4√5
4√63 becomes 12√7
Now we have:
4√5 - 3√7 - 2√5 + 12√7
Combine like terms and simplify:
2√5 + 9√7
That is as far as you can go.
I hope this helps and is what you were asking.
Answered by
Malliga
Solution for 9th std all sums
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