Consider the two polynomials f and g:
f = 3x² + x +5; g= 4x² + x + 5
(a) Use ‘sym2poly’ command to obtain the row vectors containing the coefficients of the two symbolic polynomials f and g and use that for next parts.
(b) Find the product of f and g. Convert your answer to a symbolic expression.
(c) Find the quotient and remainder of f divided g. Convert your answers to symbolic expressions.
(d) Evaluate the function g when -5 ≤ x ≤ 5. Then plot the function using ‘plot’ command.

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step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

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jbankston is right, use thhe link and you should find the answer.