Which of the following is -14(5x-2)(x+19)/-7(x+19)(5x-2) simplified? -2 2 -14(5x-2)/-7)(5x-2) -14(x+19)/-7)(5x-2)

30 determine the coefficient on x 12 y 24 x12y24 in ( x 3 + 2 x y 2 + y + 3 ) 18 . (x3+2xy2+y+3)18. (be careful, as x x and y y now appear in multiple terms! )

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In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.