Question

@jim_thompson5910 @whpalmer4 @zepdrix @Kainui @inkyvoyd
Solve.

(a - 4)^2 = 25
{-9, 1}
{9, -1}
{29, -21}
{-21, 29}

Answer 1

@neba.zi

Answer 2

Taking both sides of square root
we get a-4=5 or a-4=-5 therefore solving for a be {9,-1}

Answer 3

Can u help me in a few more?

Answer 4

Solve.

3x^2 + 4 = 8

Answer 5

Sure!Go ahede!! I will try!!

Answer 6

the one above what u just wrote

Answer 7

@neba.zi

Answer 8

3x^2+4=8 --- Subtracting 4both sides
3x^2=4----dividing both sides by 3
x^2=4/3---then taking square root
\[x=2/\sqrt{3}=2\sqrt{3}/3 \]

Answer 9

Complete the square and solve. Show all work.

x^2 + 4x = 5

Answer 10

@neba.zi

Answer 11

x^2+4x=5
x^2+4x+4=5+4----divid the coficient of middle term by 2 and square it finally add it both sides therefore it becomes perfect square
(x+2)^2=9---taking the square root
x+2=3 or x+2=-3 therefore x=1 or x=-5

Answer 12

x=1 or x=-5? that would be the answer

Answer 13

Use the quadratic formula to sovle the equation. Round your answer to the nearest tenth.

5x^2 + 2x - 9 = 0
{-1.2, -1.6}
{1.2, 1.6}
{1.2, -1.6}

{-1.2, 1.6}

Answer 14

@Blank 

Answer 15

x = 1.2, -1.6

Answer is C. {1.2, -1.6}

Answer 16

Use the discriminate to determine the number of and type of solutions.

-3m^2 - 7m = 6
2 rational solutions
2 irrational solutions
1 irrational solution
0 solutions

Answer 17

the discriminat b^2-4ac<0 so it doesnt hv solution(no solution)