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

Respuesta :


[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.

Answer:

1. Option b is correct, [tex]-3\sqrt{2}[/tex]

2. option d is correct; 0

Step-by-step explanation:

1. Simplify the sum or difference:

[tex]4\sqrt{2} - 7\sqrt{2}[/tex]

then, the result we get;

[tex]-3\sqrt{2}[/tex]

Therefore, the difference of [tex]4\sqrt{2} - 7\sqrt{2}[/tex] is, [tex]-3\sqrt{2}[/tex]

2.

Simplify the sum or difference:

[tex]3\sqrt{7} - \sqrt{63}[/tex]

We can write [tex]\sqrt{63}[/tex] as:

[tex]\sqrt{63} = \sqrt{9 \cdot 7} = \sqrt{3^2 \cdot 7} =3\sqrt{7}[/tex]

then;

[tex]3\sqrt{7} -\sqrt{63} = 3\sqrt{7}-3\sqrt{7} = 0[/tex]

Therefore, the difference of [tex]3\sqrt{7} - \sqrt{63}[/tex] is, 0