Factorisation Quiz 4

$(a + b)^3 – 3ab (a + b) = ……$

$\frac{8.47\times8.47-1.53\times1.53}{6.94}=.........$

$(3x – 2y)^2 – (3x -2y)^2 = ……$

4x + 1 is a factor of …………..

$(2a+1)(\frac1{2a-1}-\frac2{4a^2-1})=.......$

$x^2-7=.............$

x + $\frac1x$ = 6 then $x^2+\frac1{x^2}$ = ..........

$x+\frac1x=6$ then $x^4+\frac1{x^4}$ = .........

$a^4-81=.............$

7a (5x – 3y) + 5b (5x – 3y) = ………