Question

ab =12 and a+b = 7 find a and b​

Answer 1

Answer:

a is 4

b is 3

Step-by-step explanation:

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Answer 2

Answer:

a+b= 7

a=7-b

put this in equation 1 i.e ab= 12

7-b)b=12

7b-b²=12

b²-7b+12=0

b²-4b-3b+12=0

b(b-4)+3b(b-4)=0

b-4=0. b+3b=0

b=4. 4b=0

b= not defined

so b=4

a+b=7

a=7-4

a=3

so a is 3 and b is 4

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