Subject: Add maths Pleasee helpp

f(x) is a cubic polynomial where the coefficient of x^3 is 1.
The roots of f(x) = 0 are -3, 1+ square root 2 and 1-square root 2.
Express f(x) as a cubic polynomial in x with integer coefficients.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Of to(3, 4) (2,1) (3,7) (5,2) (5,-2) (3, 3) (-2, 3) (1,2) (-4,-2) (-3, 1) (4, -1) (-1, 1) 10 v 29

Is a triangle with sides of length 6ft, 21 ft, 23 ft. a right triangle?