Question

Simplify √63-5√28+11√7

Answer 1

hi
we also write √63 as √7×9
√28 as √7×4
so,
√63-5√28+11√7
√7×9 - √7×4 +11√7
3√7-2√7+11√7
12√7 is the answer
please mark as brainliest

Answer 2

√63 - 5 √28 + 11 √7

= √9*7 - 5√4*7 + 11√7

= As √9 = 3 and √4 = 2 to make is simpler we can write it as 3 and 2 respectively.

√3*7 - 5√2*7 + 11√7

As 7 is common in all the equations and if we take the 7 outside we will have this:

3√7 - 5*2√7 + 11√7

= 3 √7 - 10√7 + 11√7

Now, we can add all the numbers except the 7

3-10 +11 (√7)

= 3 √7

I hope this helps you understand!