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OpenStudy (anonymous):
how do you evaluate (2x) (5x) - 23 where x=4
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OpenStudy (anonymous):
2(4)*5(4)-23 Replace x with 4. 8*20-23 We do multiplication first, then we have 160 - 23 So we have 137. Check out http://www.tutorsean.net for free math tutoring videos. Also check out and Like Tutor Sean on Facebook to meet with other students and tutors for free math and other help.
OpenStudy (anonymous):
Substitute x =4 in the equation, therefore 2*4*5*4-23 = 137
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