1)(4b+1)(1-4b)2)(a+3c)^2+(b+3c)(b-3c)3)(x+3)^2-(x-3)^24)(x-4y)^2+(x+4y)^25)(x-3)(x+3)-(x+8)(x-8)6)(p+1)^2-(p+2)^27)(y-2)(y-3)-(y-1)^28)3x(3x+7)-(3x+1)^29)5b^2-(a-2b)^2 ЗАРАНЕЕ ОГРОМЕННОЕ ЧЕЛОВЕЧЕСКОЕ СПАСИБИЩЕ !!!!!!

1) = (1+4b)(1-4b) = [latex] 1^{2} - (4b)^{2} = 1 - 16 b^{2} [/latex] 2) = [latex] a^{2} +6ac + (3c)^{2} + b^{2} - (3c)^{2} = a^{2} +6ac+ + b^{2} [/latex] 3) = [latex] x^{2} +6x + 9 x^{2} - ( x^{2} -6x+9 x^{2} ) = x^{2} +6x+9 x^{2} - x^{2} +6x-9 x^{2} =12x[/latex] 4) = [latex] x^{2} -8xy+16 y^{2} + x^{2} +8xy+16 y^{2} = 2 x^{2} +32 y^{2} [/latex] 5) = [latex] x^{2} -9-( x^{2} -64)= x^{2} -9- x^{2} +64=55[/latex] 6) = [latex] p^{2} +2p+1-( p^{2} +4p+4)= p^{2} +2p+1- p^{2} -4p-4=-2p-3[/latex] 7) = [latex] y^{2} -2y-3y+6-( y^{2} -2y+1)= y^{2} -5y+6- y^{2} +2y-1=-3y+5[/latex] 8) = [latex] 9x^{2} +21x-(9 x^{2} +6x+1)=9 x^{2} +21x-9 x^{2} -6x-1=15x-1[/latex] 9) = [latex]5b^{2} -( a^{2} -4ab+4b^{2}) = 5 b^{2} - a^{2} +4ab-4b^{2} = b^{2} +4ab- a^{2} [/latex]

1)(4b+1)(1-4b) = 1 - 16b^2 2)(a+3c)^2+(b+3c)(b-3c) = a^2 + 6ac + 9c^2 + b^2 - 9c^2 = a^2 + 6ac + b^2 3)(x+3)^2-(x-3)^2 = (x+3-x+3)(x+3+x-3) = 12x 4)(x-4y)^2+(x+4y)^2 = x^2 - 8yx + 16y^2 + x^2 + 8yx + 16y^2 = 2x^2 + 32y^2 5)(x-3)(x+3)-(x+8)(x-8) = x^2 - 9 - x^2 +  64 = 55 6)(p+1)^2-(p+2)^2 = (p+1-p-2)(p+1+p-2) = 1-2p 7)(y-2)(y-3)-(y-1)^2 = y^2 - 5y + 6 - y^2 + 2y -1 = -3y + 5 8)3x(3x+7)-(3x+1)^2 = 9x^2 + 21x - 9x^2 - 6x - 1 = 15x - 1 9)5b^2-(a-2b)^2  = 5b^2 - a^2 + 4ab - 4b^2 = b^2 + 4ab - a^2