How do you simplify #sqrt28+sqrt63#?
2 Answers
Apr 23, 2018
5
Explanation:
Simplify by finding common multipliers:
Because it's a square root,2 of the same numbers can be taken from the root and put infront of the root
2
Because the square roots are the same in each number, add the coefficients
5
Apr 23, 2018
Explanation:
#"using the "color(blue)"law of radicals"#
#•color(white)(x)sqrtaxxsqrtbhArrsqrt(ab)#
#sqrt28=sqrt(4xx7)=sqrt4xxsqrt7=2sqrt7#
#sqrt63=sqrt(9xx7)=sqrt9xxsqrt7=3sqrt7#
#rArrsqrt28+sqrt63=2sqrt7+3sqrt7-5sqrt7#