1) Simplify 4a (7a + 5) -3 and find its value for i) a = -2 ii) a= 0) .
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Answered by
0
Answer:
69 and -3
Step-by-step explanation:
i) -8( -14 + 5 ) - 3
72 - 3
69
ii) 0(0+5) - 3
-3
Answered by
0
Step-by-step explanation:
1) a = -2
4a ( 7a + 5 ) - 3
4 × ( -2 ) { 7 × ( - 2 ) + 5 } -3
-8 × ( - 14 + 5 ) - 3
- 8 × ( - 9 ) - 3
72 - 3
= 69
2) a = 0
4 × 0 ( 7 × 0 + 5 ) - 3
0 × 5 - 3
0 - 3
= - 3
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