Answer:
136
Step-by-step explanation
multiply 4 by 31 and add 20
Answer:

Step-by-step explanation:
Given


Required
Find x such that: 
This gives:

Collect like terms


Expand

Factorize

Factor out x - 1

Solve:

-4.5 or -4.3 i’m not really sure i’m just estimating
Answer:
Look here
Step-by-step explanation:
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