SOLUTION: 1.simplify: 2√7+3√7+√7 2.simplify: 6√7-7 3.simplify: -3√2+2√2 4.solve the equation: √x=9

Algebra ->  Linear-equations -> SOLUTION: 1.simplify: 2√7+3√7+√7 2.simplify: 6√7-7 3.simplify: -3√2+2√2 4.solve the equation: √x=9      Log On


   

Question 460947: 1.simplify: 2√7+3√7+√7
2.simplify: 6√7-7

3.simplify: -3√2+2√2

4.solve the equation: √x=9
Answer by JimboP1977(311) About Me  (Show Source):
You can put this solution on YOUR website!

2%2A7%5E%281%2F2%29%2B3%2A7%5E%281%2F2%29%2B7%5E%281%2F2%29
Common factor of 7%5E%281%2F2%29
7%5E%281%2F2%29%2A%282%2B3%2B1%29
7%5E%281%2F2%29%2A%282%2B3%2B1%29
6%2A7%5E%281%2F2%29
Have a go at the others and tell me how you get on...