Question

Which of the following expressions are polynomials?

(a) x²+7x+12​

Answer 1

Now, let's solve it by splitting the middle term.

Here, addition of 4x and 3x is 7x &

Multiplication of 4x and 3x is 12 x².,

which is correct. So, zeros are -4 and -3. We have quadratic polynomial = x² + 7x + 12.

Answer 2

Answer:

sum 7 and product 12

x²+4x+3x+12

x(x+4)+3(x+4)

(x+3)(x+4)