Question

simplify 2root7 + 4root7 + 2root28​

Answer 1

Answer:

10root7

Step-by-step explanation:

2R7+4R7+2R7*4

2R7+4R7+4R7  (take out 2 multiply outside)

10R7

Answer 2

Answer:

$2 \sqrt{7} + 4 \sqrt{7} + 2 \sqrt{28 } \\ = 2 \sqrt{7} + 4 \sqrt{7} + 2 \times 2 \sqrt{7} \\ = 2 \sqrt{7} + 4 \sqrt{7} + 4 \sqrt{7 } \\ = \sqrt{7} (2 + 4 + 4) \\ = \sqrt{7} (10) \\ = 10 \sqrt{7}$

hope it helps uu