(x ? 8y) - (2x ? 4y) is an identical element as +a million*(x ? 8y) + -a million*(2x ? 4y) so distribute the those into the brackets => x - 8y - 2x + 4y then assemble like words => x - 2x - 8y + 4y => -x - 4y so A = -a million and B = -4 keep in mind subtraction is purely addition of a unfavourable kind
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Verified answer
First, you multiply 3 and 6. Then you multiply √20 by √5.
3 X 6 = 18
√20 X √5 = √100
But, √100 = 10.
So you multiply 18 X 10 = 180.
180 is the answer.
3√20 X(times) 6√5
= 3*6*√(5*20
=18√100 = 18*10 = 180
It's 18√100 = 180. One really doesn't need to do any more!
Nevertheless, here are the principles involved in this one-line result:
3 x 16 = 18; also, √a x √b = √(ab), so √20 x √5 = √100, which of course equals 10.
Live long and prosper.
3*√20 = 3*√( 4*5) = 3*2*√5 = 6√5 Then
6*√5 * 6√5 = 6*6*√5*√5 = 36*5 = 180
HTH ☺
Doug
3√20 = √9x√20 = √180 = √36x√5 = 6√5
3√20 = √180
6√5 = √180
√180*√180 = 180
180*√180 = 180√180
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3√20 n(times)6√5 =180^n/2
the sqrt of 20 can be broken up into, sqrt of 4 Times the sqrt of 5.... so
3 * sqrt of 4 * sqrt of 5 * 6 sqrt 5 = 3 * 2 * sqrt 5 * 6 sqrt 5
6 sqrt 5 * 6 sqrt 5
36 * 5
180 is the answer!
:)
3sqrt(20) = 3 sqrt(4 * 5) = 3 sqrt4)*sqrt(5) = 3 * 2 * sqrt(5) = 6 sqrt(5)
6sqrt(5)*6sqrt(5) = 6^2 * 5 = 180
3 sq rt(4 times5) times 6 sq rt 5
3(2) sq rt 5 times 6 sq rt 5
36 sq rt 5 sq rt 5
36(5) = 180
or 3(6) sq rt 20 times 5
18 sq rt 100
18(10) = 180
(x ? 8y) - (2x ? 4y) is an identical element as +a million*(x ? 8y) + -a million*(2x ? 4y) so distribute the those into the brackets => x - 8y - 2x + 4y then assemble like words => x - 2x - 8y + 4y => -x - 4y so A = -a million and B = -4 keep in mind subtraction is purely addition of a unfavourable kind