Factorise
$16 x^{2}+40 x y+25 y^{2}$
$=(4 x)^{2}+2(4 x)(5 y)+(5 y)^{2}$
$=(4 x+5 y)^{2}$
$=(4 x+5 y)(4 x+5 y)$
Factorise the following quadratic polynomials by splitting the middle term
$15 x^{2}+7 x-2$
Verify whether the following are True or False:
$-3$ is a zero of $y^{2}+y-6.$
Without actually calculating the cubes, find the value of :
$(0.2)^{3}-(0.3)^{3}+(0.1)^{3}$
Classify the following as linear, quadratic or cubic polynomial
$5-3 t$
$4 y+11$
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