Take nearest values21.003 × 39.998 ?209.91 = 126× ?630 = 126× ?? = 5 (approx)
[(7.99)^2?(13.001)^2+(4.01)^3]^2= X X= [8^2-13^2+4^3]^2 X= [64-169+64]^2 X= [-41]^2 X=1681
x^2?5x ?24 = 0
(x-8) (x+3)
x = 8, -3
II. 2y^2+ 19y + 35 = 0
(2y+7) (y+7)y= -7, -5/2
So can?t be determined
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