Question

if a+b=7 and ab=12 find the value of a​

Answer 1

Answer:

here is your answer

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Answer 2

Step-by-step explanation:

(a+b) ^2 =a^2+b^2+2ab

49=a^2+b^2+24

a^2+b^2=25

(a-b) ^2=a^2+b^2-2ab

(a-b) ^2=25-24

(a-b) ^2=1

a-b=1

a+b=7

a-b=1

2a=8

a=4

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