Factor this equation 75k^2+30k=-3
2 answers:
Answer:
k=-1/5
Step-by-step explanation:
Factor and set each factor equal to zero.
Add 3 to both sides of the equation.
75k^2+30k+3=0
Factor 3 out of 75k^2+30k+3.
Factor using the perfect square rule.
Divide each term by 3 and simplify.
Set the 5k+1 equal to 0.
Solve for k.
The answer is K=-1/5
You suppose to divide both sides by 3.
Move the constant to the left-hand side and change its sign Use a^2 + 2 ab+ b^2 = (a+b)^2 to factor the expression.
The only way an exponentiation can be 0 is when the base equals 0.
Move the constant to the right-hand side and change its sign.
Divide both sides of the equation by 5.
Answer: K=-1/5
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