If m=3 and n=2 find the value of (1) 9m2 – 10n3 (2) 2m2n2 (3) 2m3 + 3n2 – 5m2n .?

If m=3 and n=2 find the value of (1) 9m2 – 10n3 (2) 2m2n2 (3) 2m3 + 3n2 – 5m2n .?

2 thoughts on “If m=3 and n=2 find the value of (1) 9m2 – 10n3 (2) 2m2n2 (3) 2m3 + 3n2 – 5m2n .?<br />​”

  1. Given:

    •Value of m = 3 and n=2.

    To Find:

    [tex] \: \sf(1)9 {m}^{2} – 10 {n}^{3} \\ \\ \sf (2)2 {m}^{2} {n}^{2} \\ \\ \sf (3)5 {m}^{2} n[/tex]

    Solution:

    we have,

    • m = 3
    • n = 2

    [tex] \: \: \sf(1)9 {m}^{2} – 10 {n}^{3} \\ \\ \: \: \sf \: = 9 \times {3}^{2} – 10 \times {2}^{3} \\ \\ \: \: \sf \: = 9 \times9 – 10 \times 8 \\ \\ \: \: \sf \: = 81 – 80 = 1 [/tex]

    [tex] \: \: \sf \: (2)2 {m}^{2} {n}^{2} \\ \\ \: \: \sf \: = 2 \times {3}^{2} \times {2}^{2} \\ \\ \: \: \sf \: = 2 \times 9 \times 4 \\ \\ \: \: \sf \: = 72[/tex]

    [tex] \: \: \sf \: (3)5 {m}^{2} n \\ \\ \: \: \sf \: = 5 \times {3}^{2} \times 2 \\ \\ \: \: \sf \: = 5 \times 9 \times 4 \\ \\ \: \: \sf = 180[/tex]

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