я думаю так
y= f(x0) + f'(x0)(x-x0)
f(-2) = (-2)^2+3(-2)-10 = 4-16 = -12
f'(x) = 2x+3
f'(-2) = 2*(-2) +3 = -4 + 3 = -1
y= -12-(x+2) = -x -2 -12 = -x - 14
я думаю так
y= f(x0) + f'(x0)(x-x0)
f(-2) = (-2)^2+3(-2)-10 = 4-16 = -12
f'(x) = 2x+3
f'(-2) = 2*(-2) +3 = -4 + 3 = -1
y= -12-(x+2) = -x -2 -12 = -x - 14