explain
Answer:
10x+−8
Step-by-step explanation:
multiply 5 x 2 = 10
turn 8 to -8
now your answer is 10x+-8
Answer:
10x^2 + 3x - 2
Step-by-step explanation:
To find the sum of the polynomials, add the like terms together. The sum of the given polynomials is 10x^2 + 3x - 2.
To find the sum of the polynomials, you need to add the like terms together. Start by adding the coefficients of the x-squared terms, which are 8 and 2. This gives you 10x^2. Then, add the coefficients of the x-terms, which are -7 and 10. This gives you 3x. Finally, add the constant terms, which are 3 and -5. This gives you -2. So, the sum of the polynomials is 10x^2 + 3x - 2.
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Reflection across y=3 in mathematics means that every point or object is mirrored over the line y=3. This results in the x-coordinate remaining the same, while the y-coordinate changes, following the formula (x, y) => (x, 2*3-y). It involves mirroring the points above and below the line y=3.
In mathematics, reflection across y=3 implies that every point or object on the coordinate plane is mirrored over the horizontal line y=3. Let's say you have a point (x,y), when it is reflected over y=3, the new point will remain at the same x position, but its y-coordinate changes. The formula for reflection is (x, y) => (x, 2*3-y). Therefore, if a point is above the line y=3, it will be reflected below it and vice versa. For example, if you have a point at (5,4), it will be reflected onto the point (5,2).
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