Algebra
posted by Taurus on .
What is the perimeter of a computer graphic with sides measuring:
2 times the square root of 50, 3 times the square of 72, 6 times the square root of 98, and 3 times the square root of 12 centimeters?

just add up the sides:
2√50 + 3√72 + 6√98 + 3√12
factor out perfect squares:
2*5√2 + 3*6√2 + 6*7√2 + 3*2√3
70√2 + 6√3