1.

7—4J_l47 +8—3\/—_l92 —Sl,/‘75

Answer»

4/7V147 + 3/8 V192 - 1/5V75 = 4/7 V3x49 + 3/8 V3x 64 - 1/5V3x25 = 4/7 (7)V3 + 3/8 (8)V3- 5V3/5 = 4V3 + 3V3 -V3==7V3-V3=6V3



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