Question

21 - X (opens X + 7) close is equals to 35

Answer 1

Answer:

21-x(x+7)=35. value of x=-7/2+√7/2i

x'=-7/2-√7/2i

Step-by-step explanation:

21-x^2-7x=35

21-x^2-7x-35=0

-14-x^2-7x=0

-x^2-7x-14=0

x^2+7x+14=0

rest of the steps are in attachment......