1). (2у-5)²+(3у-5)(3у+5)+40 при у =2 2). (3х-4)²+(2х-4)(2х+4)+65 при х = -3

!!

1)

(2*2-5)^2+(3*2-5)(3*2+5)+40

(2 x 2-5)^2+(3× 2 - 5)(3 × 2 + 5) + 40 = (4 - 5)^2 + (6-5)(6 + 5) + 40 = (-1)^2+ 40 = 52 + 1 × 11 + 40 = 1 + 11 + 40 = 12 +40 =52

2)

(3*(-3)-4^2+(2*(-3)-4) (2*(-3)+4)

(3 × (-3) - 4^2 + (2 × (-3) - 4)( 2 × (-3) + 4) + 65) = -9- 16+ (-6-4) (-6 + 4) + 65 = -25+( -10) * (−2) + 65 = -25 +20 + 65= -5 + 65 = 60