(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. don't 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.
To simplify the expression ((sqrt3)+5)((sqrt3)-3), you can use the FOIL method. Replace the brackets with parentheses and follow these steps:
1. Multiply the first terms: (sqrt3) * (sqrt3) = 3.
2. Multiply the outer terms: (sqrt3) * (-3) = -3sqrt3.
3. Multiply the inner terms: 5 * (sqrt3) = 5sqrt3.
4. Multiply the last terms: 5 * (-3) = -15.
Now, combine the terms:
3 - 3sqrt3 + 5sqrt3 - 15.
Next, combine like terms:
(3 - 15) + (-3sqrt3 + 5sqrt3).
This simplifies to:
-12 + 2sqrt3.
So, the final answer is -12 + 2sqrt3.