Answer:
g=14, x=4
Step-by-step explanation:
g x 4=2×4² + 7×4-4
g x 4=2×16+7×4-4
gx4=32+7×4-4
gx4=32+28-4
gx4=60-4
gx4=56
56
gx4= 4
g=14
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