Find the values of the following expressions: (i) 16x2+24x+9, when x=7

1.	Find the values of the following expressions: (i) 16x2+24x+9, when x=74(ii) 64x2+81y2+144xy, when x=11 and y=43(iii) 81x2+16y2−72xy, when x=23 and y=34
Answer» Find the values of the following expressions: $(i) 16 x^{2} + 24 x + 9, w h e n x = \frac{7}{4} (i i) 64 x^{2} + 81 y^{2} + 144 x y, w h e n x = 11 a n d y = \frac{4}{3} (i i i) 81 x^{2} + 16 y^{2} - 72 x y, w h e n x = \frac{2}{3} a n d y = \frac{3}{4}$

Find the values of the following expressions: (i) 16x2+24x+9, when x=74(ii) 64x2+81y2+144xy, when x=11 and y=43(iii) 81x2+16y2−72xy, when x=23 and y=34

Answer»

Find the values of the following expressions:

$(i) 16 x^{2} + 24 x + 9, w h e n x = \frac{7}{4} (i i) 64 x^{2} + 81 y^{2} + 144 x y, w h e n x = 11 a n d y = \frac{4}{3} (i i i) 81 x^{2} + 16 y^{2} - 72 x y, w h e n x = \frac{2}{3} a n d y = \frac{3}{4}$

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Find the values of the following expressions: (i) 16x2+24x+9, when x=74(ii) 64x2+81y2+144xy, when x=11 and y=43(iii) 81x2+16y2−72xy, when x=23 and y=34

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