Given the following expressions find its value if x=5.
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1. 3x + 10
[tex] \tt3x + 10 \\ = \tt3(5) + 10 \\ = \tt15 + 10 \\ = \underline{ \boxed{ \orange{ \tt \: \: 25\: \: }}} [/tex]
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2. 7x² + 4x - 5
[tex] \tt7 {x}^{2} + 4x - 5 \\ = \tt7(5 {)}^{2} + 4(5) - 5 \\ \tt = 7(25) + 4(5) - 5 \\ = \tt175 + 20 - 5 \\ = \tt195 - 5 \\ = \underline{ \boxed{ \orange{ \tt \: \: 190\: \: }}} [/tex]
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3. 10x² - 3x + 5
[tex] \tt10 {x}^{2} - 3x + 5 \\ \tt = 10(5 {)}^{2} - 3(5) + 5 \\ \tt = 10(25) - 3(5) + 5 \\ \tt = 250 - 15 + 5 \\ = \tt 250 - 20 \\ = \underline{ \boxed{ \orange{ \tt \: \:230 \: \: }}} [/tex]
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4. 3x + 2x² - 3x + 10
[tex] \tt3x + 2 {x}^{2} - 3x + 10 \\ \tt = 3(5) + 2(5 {)}^{2} - 3(5) + 10 \\ = \tt3(5) + 2(25) - 3(5) + 10 \\ = \tt15 + 50 - 15 + 10 \\ = \tt65 - 15 + 10 \\ = \tt65 - 25 \\ = \underline{ \boxed{ \orange{ \tt \: \: 40\: \: }}} [/tex]
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Note: Just wanna say that fix your question before posting it, because we may not understand what was your question.
