$$5( { 2 }^{ 2 } -5)+4 \times { 3 }^{ 2 } -15 \times 2$$
$1$
$$5\left(4-5\right)+4\times 3^{2}-15\times 2$$
$$5\left(-1\right)+4\times 3^{2}-15\times 2$$
$$-5+4\times 3^{2}-15\times 2$$
$$-5+4\times 9-15\times 2$$
$$-5+36-15\times 2$$
$$31-15\times 2$$
$$31-30$$
$$1$$
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