Rezmawadiviz
Answered

what is the quadratic equation formed by the roots -7 and 4?
A. x² + 3x - 28 = 0
B. x² - 3x - 28 = 0
C x² - 3x + 28 = 0
D. x² + 3x + 28 = 0​

Sagot :

Amieroseaguiflorviz

Answer:

B.x²-3x-28=0

Step-by-step explanation:

if the given is:(x-7)(x+4)=0

then

(x-7)(x+4)=0

then multiply

x(x)-7(x)+x(4)-7(4)=0

then

x²-7x+4x-28=0

x²-3x-28=0