Question

value of 3x² +2x - a equal to 7 , x=7. answer step by step​

Answer 1

Answer:

Here is your answer mate ☺️

Step-by-step explanation:

$x = 7 \\ {3x}^{2} + 2x - a = 7 \\ 3({7}) {}^{2} + 2(7) - a = 7 \\ 3(49) + 14 - a = 7 \\ 147 + 14 - a = 7 \\ 161 - a = 7 \\ a = 161 - 7 \\ a = 154$

Hope it will help you .

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