Factorise the following quadratic polynomials by splitting the middle term
$6 x^{2}+7 x-20$
$(2 x+5)(3 x-4)$
Verify whether $2$ and $5$ are zeros of the polynomial $x^{2}-2 x-15$ or not.
Expand the following:
$(-x+2 y-3 z)^{2}$
Evaluate
$205 \times 195$
Expand
$(2 x+3 y+5)^{2}$
Find the zero of the polynomial in each of the following cases
$q(m)=0.3 m-0.15$
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