HELP ASAP PLEASEE!! Simplify the sum or difference: 4√2-7√a.) -√6b.) -3√2c.) -11√2d.) 11√2simplify the sum or difference: 3√7- √63a.) -2√7b.) -6√7c.) -4√3d.) 0

[tex] 4\sqrt{2} - 7 \sqrt{2} = - 3 \sqrt{2} [/tex]
First question answer is B.
[tex]3 \sqrt{7} - \sqrt{63} = \sqrt{63} - \sqrt{63} = 0[/tex]
Second question answer is D.

3^2 = 9, 7 x 9 =63
**In case you're wondering why 3 square root 7 equals to square root 63.

Hope this helps.