Tolong dbntu ya. Pake jalan yg lengkap

Tolong dbntu ya. Pake jalan yg lengkap

Maaf cuma bisa bantu itu semoga benar

Gambar Jawaban

4. $sqrt{16}$ × $sqrt{2}$ + $sqrt{4}$ × $sqrt{2}$ + $sqrt{25}$ × $sqrt{2}$ $\text{[math]}$ = 4 $sqrt{2}$ + 2 $sqrt{2}$ + 5 $sqrt{2}$ $\text{[math]}$ = 11 $sqrt{2}$

5. $sqrt{4}$ × $sqrt{5}$ + $sqrt{4}$ × $sqrt{7}$ – $sqrt{25}$ × $sqrt{5}$ + $sqrt{9}$ × $sqrt{7}$ – $sqrt{16}$ × $sqrt{7}$ $\text{[math]}$ = 2 $sqrt{5}$ – 5 $sqrt{5}$ – 4 $sqrt{5}$ + 2 $sqrt{7}$ + 3 $sqrt{7}$ $\text{[math]}$ = -7 $sqrt{5}$ + 5 $sqrt{7}$

maaf ya kalau ada salah.