2√20 - 3√7 - 2√5 + 4√63 = 2√(4 x 5) - 3√7 - 2√5 + 4√(9 x 7) = 4√5 - 2√5 - 3√7 + 12√7 = 2√5 + 9√7
4√5 + 4√5 = 8√5.
radical 30
(Square root of 5) times 4
6 radical 2
2 times radical 5 or about 4.472135955
5√2*5√2=5*5*√2*√2=5*5*2=25*2=50
If we factor 60, we get 60 = 2 * 2 * 3 * 5 So sqrt ( 60 ) = sqrt (2 * 2 * 3 * 5) = sqrt (2 * 2) * sqrt (3 * 5) = 4 * sqrt( 15 ) ____________________________________________________________ actually if you do by just using the simpler way you should get 2 radical 15 since , 60 has the closest perfect square of 4 and non perfect of 15 this is how you should solve radical 60 = radical 4 times radical 15 radical 60 = simplify the 4 to 2 and leave radical 15 So , radical 60 = 2 radical 15 not what is above .
2√20 - 3√7 - 2√5 + 4√63 = 2√(4 x 5) - 3√7 - 2√5 + 4√(9 x 7) = 4√5 - 2√5 - 3√7 + 12√7 = 2√5 + 9√7
5 times 3 times 2 times 2. Or 2 radical 15.
4√5 + 4√5 = 8√5.
radical 30
Here is an example, radical 20 plus radical 5. Now radical 20 is 2(radical 5) so we can add radical 5 and 2 radical 5 and we have 3 radical 5.
the SQ of 8 is.... SQ 4 times 2 = SQ 4 times SQ 2 = 2 times SQ 2 or 2(SQ)2 A square root is a number that can be multiplied by the same number twice... for example: the SQ of 25 is 5 because 5 x 5 = 25
(Square root of 5) times 4
6 radical 2
5 radical 2 (5√2)