Answer:
(i) [4×(-2)^(x)] / [49×7^(x)] = (-2/7)^(x+2)
(ii) 48(ab)^4) = -3(2ab)^(4)
Step-by-step explanation:
(i) (-2/7)^(x) (-2/7)² = (-2)^(x)/7^(x) × 4/49 = [4×(-2)^(x)] / [49×7^(x)]
or
(i) (-2/7)^(x) (-2/7)² = (-2/7)^(x+2)
(ii) -3ab² x 8a²b (2a¹b) = -3ab² × 8a²b × 2ab
= -48 a^(4) b^(4)
= -48(ab)^(4)
(ii) -3ab² x 8a²b (2a¹b) = -3ab² ×2³a²b × 2ab
= -3×2^(4) a^(4) b^(4)
= -3(2ab)^(4)
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Verified answer
Answer:
(i) [4×(-2)^(x)] / [49×7^(x)] = (-2/7)^(x+2)
(ii) 48(ab)^4) = -3(2ab)^(4)
Step-by-step explanation:
(i) (-2/7)^(x) (-2/7)² = (-2)^(x)/7^(x) × 4/49 = [4×(-2)^(x)] / [49×7^(x)]
or
(i) (-2/7)^(x) (-2/7)² = (-2/7)^(x+2)
(ii) -3ab² x 8a²b (2a¹b) = -3ab² × 8a²b × 2ab
= -48 a^(4) b^(4)
= -48(ab)^(4)
or
(ii) -3ab² x 8a²b (2a¹b) = -3ab² ×2³a²b × 2ab
= -3×2^(4) a^(4) b^(4)
= -3(2ab)^(4)