Question

очень срочно нужно сделать.

Answer 1

№1

а)

$(x-1)^{2} +(2x+1)^{2} \\x^{2} -2x+1+4x^{2} +4x+1\\5x^{2} +2x+2$

б)

$(3-4y)(4y+3)\\(3-4y)(3+4y)\\9-16y^{2}$

в)

$(3-a)(9+3a-a^{2} )\\3^{3} -a^{3} \\27-a^{3}$

г)

$(2a+1)^{3} \\(2a)^{3}+3(2a)^{2} *1+3*2a*1^{2} +1^{3} \\8a^{3} +3*4a^{2} *1+3*2a*1+1\\8a^{3}+12a^{2}+6a+1$

№2

а)

$25a^{2}-10a+1\\ 5^{2}a^{2}-2*5a*1+1^{2}\\(5a)^{2}-2*5a*1+1^{2}\\(5a-1)^{2}$

б)

$64x^{2} -9y^{2}\\(8x)^{2} -(3y)^{2} \\(8x-3y)(8x+3y)$

в)

$64x^{3} -27y^{3} \\(4x)^{3} -(3y)^{3} \\(4x-3y)(16x^{2} +12xy+9y^{2})$

г)

$b^{5}-b^{3}+b^{2}-1\\b^{3}(b^{2}-1)+b^{2}-1\\(b^{2}-1)(b^{3}+1)\\(b-1)(b+1)^{2}(b^{2}-b+1)$