a)
[tex](2x-1)^{2} -(x+3)^{2} = (4x^{2} -4x +1)-(x^{2} +6x+9) = 4x^{2} -4x+1-x^{2} -6x-9= 3x^{2} -10x-8[/tex]
b)
[tex](3x+4)^{2} + (2x -6)^{2} = 9x^{2} +24x+16+4x^{2} -24x +36=13x^{2} +52[/tex]
c)
[tex](5x-1)(5x + 1)-(4x-4)^{2}= 25x^{2} -1 -(16x^{2} -32x+16)=25x^{2} -1-16x^{2} +32x-16=9x^{2} +32x-17[/tex]
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a)
[tex](2x-1)^{2} -(x+3)^{2} = (4x^{2} -4x +1)-(x^{2} +6x+9) = 4x^{2} -4x+1-x^{2} -6x-9= 3x^{2} -10x-8[/tex]
b)
[tex](3x+4)^{2} + (2x -6)^{2} = 9x^{2} +24x+16+4x^{2} -24x +36=13x^{2} +52[/tex]
c)
[tex](5x-1)(5x + 1)-(4x-4)^{2}= 25x^{2} -1 -(16x^{2} -32x+16)=25x^{2} -1-16x^{2} +32x-16=9x^{2} +32x-17[/tex]
f) (2x + 3)²-(3x + 2)² =
g) (5x-2)²-(4x-3)²-(3x
h) 3(x-3)²+2(2x - 3)(2x + 3) =
+ 2)(3x - 2) =