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The number of real solutions of the equation $$x^2 - 10 \mid x \mid - 56 = 0$$ is
The number of real solutions of the equation $$x^2 - 10 \mid x \mid - 56 = 0$$ is
We need to find the solutions to the equation - $$x^2 - 10 \mid x \mid - 56 = 0$$
Taking two cases
Case 1: x > 0
$$x^2-10x-56=0$$
$$x^2-14x+4x-56=0$$
$$x\left(x-14\right)+4\left(x-14\right)=0$$
$$\left(x+4\right)\left(x-14\right)=0$$
x = -4 and x = 14
Since, x > 0
x = 14 is the only possible value.
Case 2: x < 0
$$x^2+10x-56=0$$
$$x^2+14x-4x-56=0$$
=> $$x\left(x+14\right)-4\left(x+14\right)=0$$
=> $$\left(x-4\right)\left(x+14\right)=0$$
x = 4 and x = -14
Since, x < 0
x = -14 is the only possible value.
Therefore, there are 2 possible real solutions.
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