+31 The number x satisfies 5x^2 + 4 = 3x + 9. Find the value of $(10x - 3)^2$.
Use the Quadratic Formula to find the value of x in the first part. Then sub that value for x in the second part.
+118608 The number x satisfies 5x^2 + 4 = 3x + 9. Find the value of $(10x - 3)^2$.
Guest has given you a very good teaching answer.
And you have responded appropriately.
I am very pleased with both of you.
This is what i suggest.
Find the answer for x - yes I know there will be 2 answers but just leave them with the plus/minus answer. You will not need to seperate them.
You can work out both at onces.
You have x= [3(+ or -)√109]/10
now find 10x
then find 10x - 3
Now it is easy to square it. Both answers will be the same.
