All the equations have been solved
What is a Quadratic Equation ?
A quadratic equation is what can be represented by
ax² +bx+c = f(x)
It is given to solve the given quadratic equations
1. x² = 25
x = ± 5
2. 16x² = 25
x² = 25/16
x = ± 5/4
3. (3x+2)²= 25
9x² +4+12x = 25
9x² +12x -21 = 0
3x(3x+7) -3(3x+7) = 0
x =1
x = -7/3
4. x² = 11x
x² -11x = 0
x (x-11) = 0
x = 0, 11
5. 3x²= 14x
3x² -14x = 0
x (3x - 14) = 0
x = 0 , 14/3
6. x²+2x = 3
x²+2x -3 = 0
x (x+3) -1(x+3) = 0
x = 1 ,-3
7.x²+2x -5 = 0
determined from the formula for the roots
x=−1±√6
x=1.44949
x=−3.44949
To know more about Quadratic Equation
https://brainly.com/question/2263981
#SPJ1
