Transcribed Image Text: In Exercises 117-130, simplify each algebraic expression. 117. 7x + 5.x 118. 8x + 10x 119. 6x? – x2 120. 9x? –

Transcribed Image Text: In Exercises 117-130, simplify each algebraic expression.
117. 7x + 5.x
118. 8x + 10x
119. 6x? – x2
120. 9x? – x?
121. 6x + 10×2 + 4x + 2x?
122. 9x + 5x? + 3x + 4x?
123. 8(3x – 5) – 6x
124. 7(4x – 5) – 8x
125. 5(3y – 2) – (7y + 2)
126. 4(5y – 3) – (6y + 3)
127. 7 – 4[3 – (4y – 5)]
128. 6 – 5[8 – (2y – 4)]
129. 18x? + 4 – [6(x² – 2) + 5]
130. 14x + 5 – [7(x? – 2) + 4]

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