Question Simplify the expression 42rp2−252rpq+378rq2 Evaluate 7r(p−3q)×6(p−3q)Multiply the terms 42r(p−3q)(p−3q)Multiply the terms 42r(p−3q)2Expand the expression More Steps Evaluate (p−3q)2Use (a−b)2=a2−2ab+b2 to expand the expression p2−2p×3q+(3q)2Calculate p2−6pq+9q2 42r(p2−6pq+9q2)Apply the distributive property 42rp2−42r×6pq+42r×9q2Multiply the numbers 42rp2−252rpq+42r×9q2Solution 42rp2−252rpq+378rq2 Show Solution