Question

The steps to derive the quadratic formula are shown below:

Answer 1

The steps to derive the quadratic formula are shown below:


Step 1 ax2 + bx + c = 0
Step 2 ax2 + bx = - c
Step 3 x2 + b over a times x equals negative c over a
Step 4 x2 + b over a times x plus b squared over 4 times a squared equals negative c over a plus b squared over 4 times a squared
Step 5 x2 + b over a times x plus b squared over 4 times a squared equals negative 4 multiplied by a multiplied by c, all over 4 multiplied by a squared plus b squared over 4 times a squared
Step 6 the square of the quantity x plus b over 2 times a equals b squared minus 4 multiplied by a multiplied by c, all over 4 times a squared
Step 7 x plus b over 2 times a equals plus or minus square root of the quantity b squared minus 4 times a times c over 4 times a squared equals plus or minus square root of b squared minus 4 times a times c, all divided by 4 times a
Step 8 x = -negative b over 2 times a plus or minus square root of b squared minus 4 times a times c, all divided by 2 times a
Step 9 x = negative b plus or minus square root of b squared minus 4 times a times c, all divided by 2 times a


Which of the following is the first incorrect step?
Step 4
Step 6
Step 7
Step 8

Answer 2

@I_Need_Help_With_Home @ILH_HIM_ @undeadknight26 @undockedraptor @Isaiah99 @destenieb22 @AnswerMyQuestions

Answer 3

Step 7 I think, I'm not sure

Answer 4

ok, anyone else think that?

Answer 5

step 4 not 100% sure though