he 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 4x2 + b over a times x plus b squared over 4 times a squared equals negative c over a

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 2 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?

AStep 4

BStep 6

CStep 7

DStep 8