SOLUTION: Simplify: (–7 sqrt11 - sqrt7)(sqrt7 – 10sqrt11)
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Question 158204: Simplify: (–7 sqrt11 - sqrt7)(sqrt7 – 10sqrt11)
Found 3 solutions by jim_thompson5910, checkley77, MathLover1:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression.
FOIL
Multiply
Take the square root of 121 to get 11. Take the square root of 49 to get 7.
Multiply
Combine like terms
So
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
(–7 sqrt11 - sqrt7)(sqrt7 – 10sqrt11)
-7SQRT11-SQRT7
SQRT7-10SQRT11 MULTIPLY
--------------------------------------
-7SQRT77-7+70*11+10SQRT77
3SQRT77-7+770
3SQRT77-763
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
(* –)( –)=
(* + * – * + * )=
( + – + )=
+ – + =
–(7*8.78) + – +=
– + – + =
–+ =
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