Please help solve: (2sqrt3)^2+(sqrt7)^2?

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Please help solve: (2sqrt3)^2+(sqrt7)^2?

2007-01-31 07:37:04 · 3 answers · asked by 1234 1 in Science & Mathematics ➔ Mathematics

3 answers

(2sqrt3)^2+(sqrt7)^2
(4*3)+7
12+7

19

2007-01-31 07:43:24 · answer #1 · answered by Bill F 6 · 0⤊ 0⤋

(2sqrt3)^2 means 2*2 * sqrt3*sqrt3

You will get 4*sqrt9, which can simplify to 4*3 or 12.

Then square the sqrt7, which will cause the square and sqrt to cancel each other out, leaving just a 7.

Add the 7 and 12 to get 19.

2007-01-31 07:43:46 · answer #2 · answered by T F 4 · 1⤊ 0⤋

Sqrt3 =1.73
2Sqrt3= 2*1.73=3.46
(2Sqrt3)^2 = 3.46*3.46=12 (very nearly)

(Sqrt7)^2 = 7

7+12=19

2007-01-31 08:05:48 · answer #3 · answered by bignose68 4 · 0⤊ 0⤋