book Maths Puzzle Numerical Ability

what are the x-intercepts of the equation y=2x^2+4x-3
please answer with square roots or fractions

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book Other Question

using elimination to solve this system of equations, how would i solve
8x-3y=-11
2x-5y=27
write in standard form the equation of a line that satisfies the given conditions: x-intercept =5 and y-intercept= -4