If 10x + 6 = 21, then = 15

Classify the following triangle check all that apply

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)- 144x+360 what am i doing wrong?

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5