Question

5 f g h di punctul i atat de aici
6 abcdef
7 abcdef
va rog e urgent

Answer 1

5) f) x^{2} +3x+5x+15=x(x+3)+5(x+3)=(x+3)(x+5)
g)x^{2}+2x+7x+14=x(x+2)+7(x+2)=(x+2)(x+7)
h)x^{2}-5x-7x+35=x(x-5)+7(x-5)=(x-5)(x-7)
i)x^{2}-4x-x+4=x(x-4)-(x-4)=(x-4)(x-1)

6) a)x^{2}-2x-x+2=x(x-1)-2(x-1)=(x-1)(x-2)
b)x^{2}-x-3x+3=x(x-1)-3(x-1)=(x-1)(x-3)
c)x^{2}-x-5x+5=x(x-1)-5(x-1)=(x-1)(x-5)
d) x^{2}-3x-2x+6=x(x-3)-2(x-3)=(x-3)(x-2)
e)x^{2}-6x-2x+12=x(x-6)-2(x-6)=(x-6)(x-2)
f)x^{2}-5x-2x+10=x(x-5)-2(x-5)=(x-5)(x-2)
g)x^{2}-6x-4x+24=x(x-6)-4(x-6)=(x-6)(x-4)
h)x^{2}-7x-5x+35=x(x-7)-5(x-7)=(x-7)(x-5)
i)x^{2}-4x-x+4=x(x-4)-(x-4)=(x-4)(x-1)
7) a)ax^{2}(3+2x)+2a^{2}x(3+2x)=ax(3+2x)(x+2a)
b)5a^{3}(a-2)+6x^{2}(a-2)=(a-2)( 5a^{3}+6x^{2})
c)3x^{2}y(5y^{2}+1)+2z^{2}(5y^{2}+1 )=(5y^{2}+1)(3x^{2}y+2z^{2})
d)xy(3+2x)+2x^{2}y^{2}(3+2x)= xy(3+2x)(1+2xy)
e)x(5x+3a^{2})-2a(5x+3a^{2})=(5x+3a^{2})9x-2a)
f)4x^{2}(9x-y)+9y^{2}(x-y)=(x-y)(4x^{2}+9y^{2})