square root of (21x^3) x square root of (3x)=?
2007-06-29 15:16:50 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
sqrt (21x^3) times sqrt (3x) = sqrt (63x^4)
This reduces to 3x^2 sqrt 7
2007-06-29 15:28:22 · answer #1 · answered by dwalon2 4 · 0⤊ 0⤋
= (â(21) X x^(3/2) X â3 X x^(1/2)
= â21 X â3 X x ²
= â63 x ²
= 3.â7.x ²
2007-07-03 08:02:38 · answer #2 · answered by Como 7 · 0⤊ 0⤋
sq. root ( 21x^3) Ã sq. root (3x)
= sq.root 63x^4 = sq.rt. (9 Ã 7 Ã x^4)
= sq.rt. (9 Ã x^4) Ã sq. root (7)
= 3 x^2 Ã sq. root (7)
2007-06-29 19:25:55 · answer #3 · answered by Pranil 7 · 0⤊ 0⤋
sq. root ( 21x^3) X sq. root (3x)
= 3x^2 X sq. root (7)
2007-06-29 18:07:35 · answer #4 · answered by Shobiz 3 · 0⤊ 0⤋
3x^2Xsq.root7
2007-06-29 19:53:31 · answer #5 · answered by Anonymous · 0⤊ 0⤋