Question

find l and b
equations are
l + b = 13
l × b = 42​

Answer 1

Answer:

hope it help dudd...........

Answer 2

Step-by-step explanation:

l + b = 13

l =13 - b

Substitute this value of b in l×b=42,

(13-b)b = 42

13b - b² = 42

b² - 13b + 42 = 0

b² - 6b - 7b + 42

b(b - 6) - 7(b - 6)=0

(b - 6)(b - 7)= 0

So b can be 6 or 7. So l is equal to 6 when b is 7 and equal to 7 when b is 6

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