Q4: (a) Simplify 3x (4x - 5) + 3 and find its values for (l) x= 3, (I)
x=1 . x 1/2
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Answer:
Step-by-step explanation:
(a) x = 3
⇒ 3x(4x - 5) + 3
⇒ 3 × 3(4 × 3 - 5) + 3 [put the value of x = 3]
⇒ 9(12-5 )+ 3
⇒ 9 × 7 + 3
⇒ 63 + 3
⇒ 66
Now,
(b) x =
⇒ 3x(4x - 5) + 3
⇒ 3 × (4 × - 5) + 3 [pu the value of x = ]
⇒ (2 - 5) + 3
⇒ (-3) + 3
⇒ + 3
⇒
⇒
Answered by
0
Step-by-step explanation:
i)3x (4x - 5) + 3
if x=3
3×3 (4×3 - 5) + 3=66
ii) 3x (4x - 5) + 3
if x=1
3×1 (4×1 - 5) + 3=0
iii)3x (4x - 5) + 3
if x=1/2
3×1/2 (4×1/2 - 5) + 3=-1.5
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