a
x2-3x – 4=0 , the solutions are:
a) x=4,- 1
b) x = - 4, 1
c) x = 4, 1
d) x= - 4, - 1
Solution: x2– 3x – 4=0
x2– 4x+x – 4=0
x(x – 4)+1(x – 4)
(x-4)(x+1)
x – 4=0 or x+1=0
x=4 or x=-1
To apply the quadratic formula to 2x2-2x=4
a) a=2,b=-2,c=-4
b) a=2,b=-2,c=4
c) a=2,b=2,c=4
d) All of the above
The number of methods to solve a quadratic equation is
a) 1
b) 2
c) 3
d) 4
Solution:a. by factorization
b. By completing the square
c. by quadratic formula
An equation of the form 2x4-3x3+7x2-3x+2=0 is a/an……
a) reciprocal equation
b) Radical equation
c)biquadratic equation
d) None of these
D
by at 2025-03-10 19:45:48