Answer:
Options A and B
i.e., A. 4(3[tex]\sqrt{7x}[/tex]) and B. [tex]\sqrt{7x}[/tex]
Step-by-step explanation:
Like radicals are similar to like terms.
For example,
x, 2x, -10x, [tex]\frac{1}{2} x[/tex], 7.3x are like terms.
[tex]xy^{2} , -9xy^{2} , 13y^{2} x[/tex] are some more examples of like terms.
Similarly, like radicals are:
[tex]\sqrt{2} , -5\sqrt{2} , 1.1\sqrt{2}[/tex] etc.
Hence, from the given options, like radicals to [tex]3\sqrt{7x}[/tex] are:
A. [tex]4(3\sqrt{7x} )[/tex] and B. [tex]\sqrt{7x}[/tex]
