MA-745

Factorising quadratics

Lower Sec Maths · Secondary 2 · Easy · Factorising quadratics

Factorise completely:

16y^2 - 81

.

$(4y-9)(4y+9)$
$(4y-81)(4y+81)$
$(2y-9)(8y+9)$
$(4y-3)(4y+3)$

Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.

Loading problem…