Answer:
D
Step-by-step explanation:
I think the answer is option B.
Because while researchers research they believed that it will lengthen the time and it don't reduced the time.
Hope it's correct..
The intermediate step in the following equation is (4x + 16)² = - 196
<h3>What is an Equation ?</h3>
An Equation is the mathematical statement formed when two algebraic expressions are equated using an equal sign.
The given equation is
4x² +64x+467 = 15
4x² + 2 * 2x *16 + 256 -256 +467 = 15
(4x + 16)² +211 = 15
(4x + 16)² = - 196
Therefore the intermediate step in the following equation is
(4x + 16)² = - 196
To know more about Equation
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Answer:
B. 28
Step-by-step explanation:
35^2-21^2=784
Square root of 784= 28 : )
I think the answer is C but i could be wrong
