How can combining like terms be used to simplify an expression?

Colonizing like terms is used to simplify an expression because it makes the equation shorter

You can find it by multiplying the areas it show u

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*