40 ^ 2 + 4a = 0
1600 + 4a = 0
4a = - 1600 Divide both sides with 4
a = - 1600 / 4
a = -400
According to what you show in your solution, your equation was probably
40a^2 + 4a = 0
4a(10a + 1) = 0
so 4a = 0 or 10a+1 = 0
a = 0 or a = -1/10
Math - if a=6 and b=-4, solve the equation (4a+4b) (4a-b)
College Algebra - Solve each equation. If an equation has no solution, so ...
Math - Solve the following equation for A : 2A/3 = 8 + 4A
math - solve the absolute value equation |3a+8|=|4a-4| the solution set is
algebra - 3(a+2)=4a I multiply 3*a+3*2=4a so 3a+6=4a I added 3a to 4a/ =7a and ...
maths - a)If one root of the equation x^2 + a(3a-5)x = 2(x+4a) is negative of ...
MATHS ASAP!!!!! - At the x axis, y is zero. So if the x intercept is (1,0) then...
algebra - Solve the following equation for A : 2A/3 = 8+4A
MATH!!!!!!!!!!!!!!!!!!!!! - 10(line)2-4a(line)=20 Absolute value How do I solve...
math - if a=6 and b=-4, solve...(4a+4b) (4a-4b)