if 4x-3y=15 xy=10 find the value of 16x² +9y
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16x^2+9y^2=(4x)^2+(3y)^2-2×4x×3y+24xy
=(4x-3y)^2+24(xy)
=(15)^2+24×10
=225+240
=465 Ans.
hope it will help you
raushan6198:
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in 8 standard
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