What does this symbol mean in geometry?

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The graph of the quadratic function shown on the left is y = –0.7(x + 3)(x – 4). the roots, or zeros, of the function are . determine the solutions to the related equation 0 = –0.7(x + 3)(x – 4). the solutions to the equation are x =

Which expression gives the area of the triangle shown below

Anyone know? will mark brainliest if correct