Question

find the value of t+s if t-s=-7 and ts=8

Answer 1

Step-by-step explanation:

given,

t-s=-7

ts=8

(t+s)²=(t-s)²+4ts

(t+s)²=(-7)²+(4×8)

(t+s)²=49+32

(t+s)=✓81

(t+s)=9

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