G 1) a2 + 3a – 40 = 0 .
solving quadratic equations
1 answer:
Answer:
The solution set is {-8, 5}.
Step-by-step explanation:
a^2 + 3a – 40 = 0 .
We need 2 numbers whose product is -40 and whose sum is +3.
They would be + 8 and - 5, so we have the factors:
(a + 8)(a - 5) = 0
Now either a + 8 = 0 or a - 5 = 0, so:
a = -8 or 5.
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If you could put more info ab this then i would understand what u want me to put
All work is show in the picture below.
5-1
5:1
for every 5 cm there is 1 m
ur welcome ;]
