Express the product of 2x•2x+6x-8 and x + 3 in standard form

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove