Friday

December 19, 2014

December 19, 2014

Posted by **Hannah** on Monday, September 6, 2010 at 7:20pm.

1)(sqrt7 + 5)(sqrt7 -6)

My answer is sqrt 7 - 30

Am I correct?

- Math(Please check answer) -
**Reiny**, Monday, September 6, 2010 at 7:29pmno, you forgot the middle terms

(√7 + 5)(√7 - 6)

= 7 + 5√7 - 6√7 - 30 , using FOIL

= -23 - √7

**Answer this Question**

**Related Questions**

algebra - simplify: 6sqrt7-sqrt7 A. 6 sqrt7 B. 5 sqrt 7 C. 5 D. 6 Simplify: ...

ALGEBRA 1 - CAN SOMEONE PLEASE CHECK TO SEE IF I HAVE DONE THESE CORRECTLY. ...

algebra - which method do you use to solve this equation.(x-1)^2=7. Is it the ...

Algebra II - I need help in multiplying two square roots. (5*sqrt7-10*sqrt2)(4*...

Please check answers) - Perform the indicated operations and simplify the result...

math - x^2-4x+32=0. would the final answer be 2 +or- 2 sqrt7 ?

college 209 - multiply (2 sqrt 7 -5 sqrt 3)(8 sqrt7-5 sqrt 3)

Math/Calculus #2 - Integrate: 1/(x-sqrt(x+2) dx I came up with: (2/3)(2*ln((sqrt...

algebra - simplify the following radical expression: sqrt (x) * sqrt (x) a) x b...

Algebra 1--Please, check my answers! - Multiply. Simplify your answer. 1. (n + 3...