7x2+2y-x2+18x+5-3y
Simplify...
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Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?
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Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?
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The equation line of cd is y=-2x-2. write an equation of a line parallels to line cd in slope-intercept form that contains point (4,5)
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