Question

(ix) x2 + ax + b = 0​

Answer 1

Explanation:

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Answer 2

Answer:

Let's solve for a.

x2+ax+b=0

Step 1: Add -x^2 to both sides.

ax+x2+b+−x2=0+−x2

ax+b=−x2

Step 2: Add -b to both sides.

ax+b+−b=−x2+−b

ax=−x2−b

Step 3: Divide both sides by x.

ax

x

=

−x2−b

x

a=

−x2−b

x

a=

−x2−b

x

Let's solve for b.

x2+ax+b=0

Step 1: Add -ax to both sides.

ax+x2+b+−ax=0+−ax

x2+b=−ax

Step 2: Add -x^2 to both sides.

x2+b+−x2=−ax+−x2

b=−ax−x2

Answer:

b=−ax−x2