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20 votes
20 votes
Help me pls

{ x }^( 2 ) -7x+12

User Peter Aylett
by
2.6k points

2 Answers

5 votes
5 votes
Yore answer here is 4 ….
User MStrutt
by
3.1k points
17 votes
17 votes

Answer:

x is 3 or 4

Explanation:

  • I assume that you want to find the solutions for this quadratic equation
  • First of all, set it all to equal 0

  • x^(2)-7x+12=0
  • 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:

  • (x-3)(x-4)=0
  • 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
User Wischan
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2.5k points