(1 point) Evaluate the following expressions and write them in the form a + bi, for some a, b ER. (−2 − 5i)(7 + 4i) = (−

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1 Point Evaluate The Following Expressions And Write Them In The Form A Bi For Some A B Er 2 5i 7 4i 1 (45.56 KiB) Viewed 69 times

(1 point) Evaluate the following expressions and write them in the form a + bi, for some a, b ER. (−2 − 5i)(7 + 4i) = (−2 − 5i)(7 + 4i) (−2 − 5i)(7 + 4i) = | − 2 − 5i| = = (−2 − 5i)(−2 − 5i) = Note: You can earn partial credit on this problem.
1 7 - 8i 3 - 9i 7 - 8i 7/113+8/113i 93/113-39/113i (7 - 8i)² = -15-112i 17 - 8i|² 15 = 3 + (−9i) : =