Question

7. For what value of k, (4-k)r? +(2k + 4) x + (8 + 1) = 0, is a perfect square
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Answer 1

Answer:

4 - k *r

Step-by-step explanation:

first we remove brackets,

then we make like terms

then we plus

Answer 2

Answer:

Step-by-step explanation:

4-k)r +(2k + 4) x + (8 + 1) = 0