What is the value of the expression below when $$ z=5 $$ ? $$ 4 z^{2}-7 z-2 $$

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Substitute $$ z=5 $$ into the expression $$ 4z^{2}-7z-2 $$.
Evaluate the expression by following steps:
- step0: Evaluate:
  $$4z^{2}-7z-2$$
- step1: Substitute:
  $$4	imes 5^{2}-7	imes 5-2$$
- step2: Multiply the terms:
  $$100-7	imes 5-2$$
- step3: Multiply the numbers:
  $$100-35-2$$
- step4: Subtract the numbers:
  $$63$$
When $$ z=5 $$, the expression $$ 4z^{2}-7z-2 $$ equals 63.

What is the value of the expression below when ?

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