Does the following set of polynomials form a basis of p_4? (justify) {2, 2 - 3t^2, 2 - 3t^2 - 5t^3, 2 - 4t^2 - 5t^4, 2 - 4t^3 - 5t^4}

sine

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

answer is 12345678900987654321234567890987654321

step-by-step explanation:

its an acute right triangle

step-by-step explanation: