Question

I need help with this question. Someone plz help!!

Answer 1

Answer with step-by-step explanation:

The first three steps of completing the square to solve the quadratic equation $x^2+4x-6=0$ are given in the question which include:

Step 1: $x^2+4x=6$

Step 2: $x^2+4x+4=6+4$

Step 3: $(x+2)^2=10$

So the next three steps will be:

Step 4: $\sqrt { ( x + 2 ) ^2 } = \sqrt { 10 }$

(taking square root on both sides of $(x+2)^2=10$ to get $x+2 = +-\sqrt{10}$)

Step 5: solve for x($x+2=3.16$ , ($x+2=-3.16$

(solve for x)

Step 6: $x=1.06$ or $x=-5.16$

(evaluate)

Answer 2

step 4: x^2+4=10 |work square x and 2|

step 5: x^2=6 |work subtract 4 from both sides|

step 6: X = 2.44 |work find the root of 6|