SOLUTION: I need help with this question: {{{ (5sqrt(30)-7sqrt(70))(4sqrt(42)-3sqrt(105)) }}} If you could give a explanation with steps would be appreciated!

SOLUTION: I need help with this question: {{{ (5sqrt(30)-7sqrt(70))(4sqrt(42)-3sqrt(105)) }}} If you could give a explanation with steps would be appreciated!

Algebra.Com

Question 873460: I need help with this question:
If you could give a explanation with steps would be appreciated!
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
FOIL Method:
First:
Outer:
Inner:
Last:
Add it up.
.
.
.

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