Answer:
91
Explanation:
We just have to put in the value of x into the equation.
8 - 4[x - (2x² + 5)] + 3
= 8 - 4[3 - (2×3² + 5)] + 3
= 8 - 4[3 - (2×9 + 5)] + 3
= 8 - 4[3 - (18 + 5)] + 3
= 8 - 4(3 -23) + 3
= 8 - 4(-20) + 3
= 8 - (-80) + 3
= 8 + 80 + 3
= 91