Factor the Expression Completely $$4 z ^ { 2 } + 28 z + 49$$

question 12

Multiple Choice

Factor the expression completely. $$4 z ^ { 2 } + 28 z + 49$$

• A) \(\quad ( 2 z + 7 ) ^ { 2 }\)
• B) \(\quad 7 ( 2 z + 7 )\)
• C) \(\quad ( 2 z + 7 ) ( 2 z - 7 )\)
• D) \(\quad ( 2 z - 7 ) ^ { 2 }\)

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A signal that is sent back to control a system by comparing the output with the input, thus allowing for adjustments to achieve desired performance.

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