Posted by ALISSA on Tuesday, May 22, 2012 at 12:08am.
Evaluate the following expressions for x=3
13)–2x^2 =
14)(2x)^2 =
10)Use the discriminant to determine
the number of solutions of 3x^24x+6=0
8)Solve sqrt[3b] = 3

math  Henry, Thursday, May 24, 2012 at 4:33pm
13. 2*(3)^2 = 18.
14. (2x)^2 = (2*(3)^2 = 6^2 = 36.
10. 3x^2  4x + 6 = 0.
D = sqrt(B^24AC).
D = sqrt(1672) = sqrt(56).
The Discriminant is < 0; therefore, we
have no real solutions and 2 imaginary
solutions.
8. sqrt(3b) = 3
Square both sides:
3b = 9
b = 3,
CHECK: sqrt(3*3) = sqrt(9)=+3,AND 3.
Answer This Question
Related Questions
 math  Evaluate the following expressions for x=3 13)–2x^2 = 14)(2x)^2 = 10)...
 math  solve 2x^2+3x+8=0 and express the solutions in a+bi form. Let's use the ...
 Discriminant  Use the discriminant to determine how many realnumber solutions ...
 algebra,math,help  Use Property 2 to simplify each of the following radical ...
 algebra  What would be the discriminant for this equation: x^22x+12=0 How many...
 Math  Use the discriminant to determine how many real number solutions the ...
 math  Use the discriminant to determine how many realnumber solutions the ...
 math  Use the discriminant to determine how many realnumber solutions the ...
 Math 111  Use the discriminant to determine the number and type of solutions ...
 intermediate algebra  3x^2+9x+4=0 the discriminant is 33, using the ...
More Related Questions