$$2 { \alpha }^{ 2 } -150 \alpha +5625$$
$4\alpha -150$
$$2\times 2\alpha ^{2-1}-150\alpha ^{1-1}$$
$$4\alpha ^{2-1}-150\alpha ^{1-1}$$
$$4\alpha ^{1}-150\alpha ^{1-1}$$
$$4\alpha ^{1}-150\alpha ^{0}$$
$$4\alpha -150\alpha ^{0}$$
$$4\alpha -150$$
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$2\alpha ^{2}-150\alpha +5625$
