Question
−4a(3a−7)
Simplify the expression
−12a2+28a
Evaluate
−4a(3a−7)
Apply the distributive property
−4a×3a−(−4a×7)
Multiply the terms
More Steps

Evaluate
−4a×3a
Multiply the numbers
−12a×a
Multiply the terms
−12a2
−12a2−(−4a×7)
Multiply the numbers
−12a2−(−28a)
Solution
−12a2+28a
Show Solution

Find the roots
a1=0,a2=37
Alternative Form
a1=0,a2=2.3˙
Evaluate
−4a(3a−7)
To find the roots of the expression,set the expression equal to 0
−4a(3a−7)=0
Change the sign
4a(3a−7)=0
Elimination the left coefficient
a(3a−7)=0
Separate the equation into 2 possible cases
a=03a−7=0
Solve the equation
More Steps

Evaluate
3a−7=0
Move the constant to the right-hand side and change its sign
3a=0+7
Removing 0 doesn't change the value,so remove it from the expression
3a=7
Divide both sides
33a=37
Divide the numbers
a=37
a=0a=37
Solution
a1=0,a2=37
Alternative Form
a1=0,a2=2.3˙
Show Solution
