Y = 7x - 15
7x - 15 + 1 + 6x - 12 = 0
y = 7x - 15
13x - 26 = 0
x = 2
y = 7*2 - 15 = 14 - 15 = - 1
( 2; - 1)
George Washington was the first American president.
√16а-√64а+√100а= 4√а-8√а+10√а=6√а
79^2=(80-1)^2=6400-160+1=6241
(х-1)(x^4+1x^3+1^2x^2+x^3+1^4)