I need to put y=(x+3)(x+4) into quadratic form and find the values of x.
I solved the quadratic equation as y= x ²+7x+12
And by using the quadratic formula I got the answer of x=-3 and -4 but when I substitute those values into the equation, I get different answers.
I thought you were meant to get two values for x but they would both equal the same number when put into the equation.
Am I doing something wrong here or can someone explain what's going on?
your answers are correct but why do you want to put it again?
if you want to check your answer whether these are correct or not then put both values of x one by one and check y is becoming 0 for each value of x, if yes then your answers are correct if not then your answers are not correct..............................
In this equation, no y-intersept. this eqaution is not touching the y-axis.
Please quote what you are replying to so we can all have some idea what you are refering to.
Also do not use a large font size for routine answers, you look like you are just attention seeking.
(treat these comments and any others made by admins/mods and helpers as warnings)
CB