Posted by **Jasmine20** on Friday, January 26, 2007 at 11:57am.

(sqrt3 + 5)(sqrt3 -3) ?

multiply that out

sqrt3*sqrt3 -3sqrt3 +5sqrt3 -15

now combine and simplify terms.

yes the problems is:

((sqrt3)+5)((sqrt3)-3)

if i put in my calculator what the squareroot of 3 it will give me 1.7

so if i it by decimals i get the follwoing

2.89-5.1+8.5-15 is this right becuase i need to do foil for it correct or no.

NNNNOOOO. dont put it in the calculator.

multiply that out

sqrt3*sqrt3 -3sqrt3 +5sqrt3 -15

now combine and simplify terms.

sqrt3*sqrt3 is 3. The two middle terms add to 2sqrt3

So the answer is 2sqrt3 -12.

## Answer this Question

## Related Questions

- math, algebra,correction - I don't know if this is right. directions: Simplify ...
- Math - Find the exact solution(s) of the system: x^2/4-y^2=1 and x=y^2+1 A)(4,...
- Algebra - Find the exact solution(s) of the system: x^2/4-y^2=1 and x=y^2+1 A)(4...
- Algebra - Find a polynomial function of degree 3 with the given numbers as zeros...
- Algebra - Rationalize denominator, all variables positive real numbers and ...
- Algebra II (check) - Assume that no denominator equals 0. sqrt12 - sqrt18 + ...
- Calculus - Find the equation (in terms of x and y) of the tangent line to the ...
- math b - Combine the radicals sqrt 72 + sqrt 18 6sqrt7 - 4sqrt7 Multiply & ...
- algebra - Can someone help me with this problem please? rationalize the ...
- trigonometry - sinA= 3/5 and C=17 Finding a and b Their two triangles and i have...