simplify the expression( 4√5-3√2)(3√5+5√2)
Answers
Answered by
76
(4√5-3√2)(3√5+5√2)
=4√5(3√5+5√2)-3√2(3√5+5√2)
=12×5+20√10-9√10-15√4
=60+20√10-9√10-15×2
=60+20√10-9√10-60
=60-60+20√10-9√10
=20√10-9√10
=11
=4√5(3√5+5√2)-3√2(3√5+5√2)
=12×5+20√10-9√10-15√4
=60+20√10-9√10-15×2
=60+20√10-9√10-60
=60-60+20√10-9√10
=20√10-9√10
=11
javed12345:
sorry i was confused
Answered by
65
hi dear
====================================
( 4√5 - 3√2 ) ( 3√5 + 5√2 )
= 4√5 ( 3√5 + 5√2 ) - 3√2 ( 3√5 + 5√2 )
= 12×5 + 20× √10 - 9×√ 10 - 15× 2
= 60 + 20√10 - 9√10 - 30
= 60 - 30 + 20√10 - 9√10
= 30 + 20√10 - 9 √10
= 30 + 11√10
===================================
====================================
( 4√5 - 3√2 ) ( 3√5 + 5√2 )
= 4√5 ( 3√5 + 5√2 ) - 3√2 ( 3√5 + 5√2 )
= 12×5 + 20× √10 - 9×√ 10 - 15× 2
= 60 + 20√10 - 9√10 - 30
= 60 - 30 + 20√10 - 9√10
= 30 + 20√10 - 9 √10
= 30 + 11√10
===================================
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