The correct answer should be A
Answer:
8 and 9
Step-by-step explanation:
64-81
The equivalent expression of (x+4)² is x²+4x+16.
<h3>What is an expression?</h3>
Expression in mathematics is combination of variables with the use of operations and given rules. It can be in the form of equation, numbers etc.
The given expression is (x+4)².
Simplifying the expression;
(x+4)²
= (x+4) (x+4)
= x²+4x+16
Therefore, the equivalent expression of (x+4)² is x²+4x+16.
To learn more about the expression;
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Rational Number, Real Number, Fraction, Decimal etc...
The whole thing is a right angle so it equals 90 degrees so you do 90-70 which equals 20.
So 20 degrees
