Factorisation

Factorise fully: $8x^{2}+24x$

Factorise fully: $8x^{2}+12x$

Factorise fully: $10x^{2}+12x$

Factorise fully: $x^{2}-49$

Factorise fully: $x^{2}-x-30$

Factorise fully: $x^{2}-3x-28$

Factorise fully: $x^{2}+3x+2$

Factorise fully: $x^{2}-16$

Factorise fully: $15x^{2}+18x$

Factorise fully: $8x^{2}+8x$

Factorise fully: $x^{2}-10x+21$

Factorise fully: $9x^{2}-4$