Could someone please help with these problems?
4x squared-5x + 3
if is a.3 b. 0.3
Please show me the work invovled on getting the answer, my teacher requests it. Thank you.
Where is the equal sign?
If you mean:
4 x^2 - 5 x + 3 = 0
then
(x-3)(4x-1) = 0
and
x = 3 or x = .25
Sorry I meant to put
4x - 5x + 3
if x is a. 3 and then b. 0.3
To find the value of the expression 4x^2 - 5x + 3 when x is 3 or 0.3, you simply substitute these values for x and perform the necessary calculations. Let's work through it step by step.
For x = 3:
Plug in x = 3 into the expression: 4(3)^2 - 5(3) + 3
Simplify: 4(9) - 15 + 3
Calculate: 36 - 15 + 3
Evaluate: 24
So, when x is 3, the value of the expression 4x^2 - 5x + 3 is 24.
For x = 0.3:
Plug in x = 0.3 into the expression: 4(0.3)^2 - 5(0.3) + 3
Simplify: 4(0.09) - 1.5 + 3
Calculate: 0.36 - 1.5 + 3
Evaluate: 1.86
Therefore, when x is 0.3, the value of the expression 4x^2 - 5x + 3 is approximately 1.86.
Hope this explanation helps!