Question

if the root of the equation ax²-7x+12=0 is 3 then find the value of x
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Answer 1

Answer:

a=1

Step-by-step explanation:

x=3

ax²-7x+12=0

a(3)²-7(3)+12=0

9a-21+12=0

9a-9=0

9a=9

a=9/9

a=1