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Answer:
z = 31
Step-by-step explanation:
A triangle adds up to 180 degrees
Therefore this equation is formed: 61 + 3z + z -5 = 180
Simplify:
4z = 124
z = 31
Hello, wheres the statement? Please provide full questions
Since both terms are perfect squares, you have to factor using the difference of squares formula where a=x and b=3
The formula for a^2-b^2 is...
(a+b)(a-b)
In this case the formula is 4(x+3)(x-3)