Answer:
x = -

Explanation:
given a quadratic in standard form
y = ax² + bx + c ( a ≠ 0 ) , then the equation of the axis of symmetry is
x = -

y = 2x² + 7x - 5 ← is in standard form
with a = 2 and b = 7 , then axis of symmetry is
x = -
= -
, that is
x = -
