How make that? k = (5²+1) JK ds = (5+1-15+0·1) ·10 (115²-185-11) (105²+115+1)²

When fully multiplied out, what is the 8th term of (x-3y)¹2?

What is the remainder when 3x⁴ + 3x³ – 5x² - 5x + 7 is divided by x + 2i?

(0.63x2 – 4.215x + 0.892) – 0.47(2x2-3x+5)

represent, 5 x 17=85, 5 x 29=145, 13 x 17=221 as a sum of two squares according to the formula n1 x n2 =(ac +bd )^2 + (ad - bc) ^2

I don't understand how (1+2+.....+k)^2=(k(k+1)/2))^2. Please explain. Thank you

a. negate: “every sun is red.” b. expand: (3x − 2)^5

Compute the quotient of (−5x3+24x2−2x+39)÷(x−5)

I got an answer of 30(x+1)^8 (x-4)^5. Am I wrong?