Respuesta :
Answer:
x is 3 or 4
Step-by-step explanation:
- I assume that you want to find the solutions for this quadratic equation
- First of all, set it all to equal 0
- [tex]x^{2}-7x+12=0[/tex]
- Now you need to factorise your expression
- You need to find two numbers that multiply together to make 12, and ad together to make -7
- These two numbers are -3 and -4
- Your new equation is:
- [tex](x-3)(x-4)=0[/tex]
- For this equation to equal 0, just one of x - 6 and x - 1 has to equal 0
- For x - 3 to equal 0, x has to be 3
- For x - 4 to equal 0, x has to be 4
- x = 3 or 4