D = 3,4 - 3.6 = -0,2
S₂₂ = (2*3,6 +21*(-0,2))*22/2 = (7,2 -4,2)*11=3*11 = 33
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4(4-2a+2a-a^2) - 6(2-a)(2-a) - (4-a)(4-a) + 10a^2 = 4(4-a^2) - 6(4-4a+a^2) - (16 - 4a - 4a + a^2) + 10a^2 = 16 - 4a^2 - 24 + 24a - 6a^2 - 16 + 4a + 4a - a^2 + 10a^2 = 16-24-16-4a^2-6a^2-a^2+10a^2+24a + 4a + 4a = 32a - 24 - a^2
4х⁴ * (-3х²)³ = 4х⁴ * (-3¹)³ * х²*³ = ( - 27 * 4)х⁴⁺⁶ = - 108х¹⁰
3(х-7) - 5(9+2х) = 3х - 21 - 45 - 10х = - 7х - 66 = - (7х + 66)
(3х - 1)(3х + 1) + (х+1)² = (3х)² - 1² + х² + 2*х*1 + 1² =
= 9х² - 1 + х² +2х + 1 = (9х² + х²) + 2х + (-1 + 1) =
= 10х² + 2х = 2х(5х + 1)