Answer:
option B and C are correct.
Step-by-step explanation:
The correct question is:
Which expressions are polynomials? Select EACH correct answer.
A: 3y2(x^1/4)
B: 9x2(y^5)
C: 4x2(y^5)
D: 8x2(3^y)
Solution:
According to this question option B and C are correct.
A polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. a variable's exponents can only be 0,1,2,3,... etc. A polynomial can not have any exponent as a variable or a fraction
(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0
Solve this quadratic for x:
x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5 (answer E)
Answer:
<em>147 toys</em>
Step-by-step explanation:
<em>for 1 person, 28toys/8hours = 3.5toys/ 1hour </em>
<em>for 42 people, 42 * 3.5toys/ 1hour = 147 toys/hour</em>
<em></em>
<em>~Hope it Helps!~</em>
6i/ (1+i)
multiply by the complex conjugate (1-i)/(1-i)
6i/(1+i) * (1-i)/(1-i)
6i* (1-i) = 6i - 6i^2 = 6i - 6(-1) = 6i +6
(1+i)*(1-i)= 1-i +i -i^2 = 1 -i+i -(-1) = 1+1=2
(6+6i)/2
3+3i
Answer: 3+3i
It’s 5 divided by 6 bc the 5 is the numerator, no she is not correct.
