D and a because they both dont change the answer and b
Answer:
13
Step-by-step explanation:
count A up to C
21²=21×21
21×21=441
2,870+441=3,221
Answer:
18
Step-by-step explanation:
367 167
Answer:
- yes, as written
- no, as simplified
Step-by-step explanation:
The equation can be simplified by subtracting 2x² from both sides. Doing that leaves a linear (not quadratic) equation:
y = 3x
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A quadratic equation is a polynomial equation such that the exponents of the variables in a term have a maximum total of 2. Here, the terms 2x² match that requirement, making this a quadratic equation.
