What are the solutions to the equation 3a^2=21a ?

The solutions to the equation 3a^2=21a are a=0,a=7

Find the zeros of 3a^2=21a

The zeros of 3a^2=21a are a=0,a=7

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3 a^{2} = 21 a

a = 0, a = 7

Solution steps

3 a^{2} = 21 a

Move

21 a

to the left side

3 a^{2} - 21 a = 0

Factor

3 a^{2} - 21 a : 3 a (a - 7)

3 a (a - 7) = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

a = 0 or a - 7 = 0

Solve

a - 7 = 0 : a = 7

The solutions to the quadratic equation are:

a = 0, a = 7

\frac{2}{3} w - 3 \leq 7

x - 9 < 3

\frac{11 !}{5 ! ( 11 - 5 ) !}

\frac{1}{- x} \leq \frac{2}{7 - x}

(x + 5) x = 84

What are the solutions to the equation 3a^2=21a ?
The solutions to the equation 3a^2=21a are a=0,a=7
Find the zeros of 3a^2=21a
The zeros of 3a^2=21a are a=0,a=7