Selamat pagi :)Nomor 7-9 Pakai cara ya!​

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Selamat pagi :)Nomor 7-9 Pakai cara ya!​

Selamat pagi :)Nomor 7-9 Pakai cara ya!​

Jawaban:

7. (7 + 6)² – √441

=13² – √21²

=(13 × 13) – 21

=169 – 21

=148

_________

8. √625 × √144

=√25² × √12²

=25 × 12

=300

_________

9. sfsqrt[3]{512}

sf=sqrt[3]{{2}^{9}}

sf={2}^{^{frac{9}{3}}}

sf={2}^{3}

=2 × 2 × 2

=4 × 2

=8

_________

10. sisisf_{persegi} = sfsqrt{L}

=sfsqrt{1024}

=sfsqrt{{32}^{2}}

=32 cm