Question

A.x2+4x=0
b.y2+6y=0
c.x2-5=0
d.4p2-p=0
e.3x2-9=0
f.4x-6x2=0
g.7m2+21m2=0
5m2-15m=0

jwaban sama rumus

Answer 1

A.x²+4x=0
x(x +4) = 0
x = 0 atau x = - 4 

b.y²+6y=0
y(y + 6) = 0
y = - atau y = -6c.x²-5=0
x² = 5
x = √5 atau x = - √5

d.4p²-p=0
p( 4p - 1)= 0
p = 0 atau p = 1/4

e.3x²-9=0
3x² = 9
x²= 3
x = √3 atau x = - √3

f.4x-6x²=0
2x ( 2 - 3x) = 0
x = 0 atau x = 2/3

g.7m²+21m =0
7m (m+3) = 0
m = 0 atau m = -3

h. 5m²-15m=0
5m(m - 3) = 0
m = 0 atau m = 3